Dyfyniad APA

National Gallery of Art (U.S.). Report and studies in the history of art. National Gallery of Art : United States Government Printing Office.

Dyfyniad Arddull Chicago

National Gallery of Art (U.S.). Report and Studies in the History of Art. Washington: National Gallery of Art : United States Government Printing Office.

Dyfyniad MLA

National Gallery of Art (U.S.). Report and Studies in the History of Art. National Gallery of Art : United States Government Printing Office.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.