Dyfyniad APA

National Gallery of Art. (1970). American paintings and sculpture: An illustrated catalogue. National Gallery of Art.

Dyfyniad Arddull Chicago

National Gallery of Art. American Paintings and Sculpture: An Illustrated Catalogue. Washington: National Gallery of Art, 1970.

Dyfyniad MLA

National Gallery of Art. American Paintings and Sculpture: An Illustrated Catalogue. National Gallery of Art, 1970.

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