could reference
Verbo regolare: reference - referenced- referenced

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could reference
you could reference
he could reference
we could reference
you could reference
they could reference 	I could be referencing
you could be referencing
he could be referencing
we could be referencing
you could be referencing
they could be referencing	I could have referenced
you could have referenced
he could have referenced
we could have referenced
you could have referenced
they could have referenced	I could have been referencing
you could have been referencing
he could have been referencing
we could have been referencing
you could have been referencing
they could have been referencing	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could not reference
you could not reference
he could not reference
we could not reference
you could not reference
they could not reference 	I could not be referencing
you could not be referencing
he could not be referencing
we could not be referencing
you could not be referencing
they could not be referencing	I could not have referenced
you could not have referenced
he could not have referenced
we could not have referenced
you could not have referenced
they could not have referenced	I could not have been referencing
you could not have been referencing
he could not have been referencing
we could not have been referencing
you could not have been referencing
they could not have been referencing	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I reference?
could you reference?
could he reference?
could we reference?
could you reference?
could they reference? 	could I be referencing?
could you be referencing?
could he be referencing?
could we be referencing?
could you be referencing?
could they be referencing? 	could I have referenced?
could you have referenced?
could he have referenced?
could we have referenced?
could you have referenced?
could they have referenced? 	could I have been referencing?
could you have been referencing?
could he have been referencing?
could we have been referencing?
could you have been referencing?
could they have been referencing? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I not reference?
could you not reference?
could he not reference?
could we not reference?
could you not reference?
could they not reference? 	could I not be referencing?
could you not be referencing?
could he not be referencing?
could we not be referencing?
could you not be referencing?
could they not be referencing? 	could I not have referenced?
could you not have referenced?
could he not have referenced?
could we not have referenced?
could you not have referenced?
could they not have referenced? 	could I not have been referencing?
could you not have been referencing?
could he not have been referencing?
could we not have been referencing?
could you not have been referencing?
could they not have been referencing?