20th century american paintings, sculpture, watercolors & drawings : public auction wednesday, may 24, 1972.

MLA

20th Century American Paintings, Sculpture, Watercolors & Drawings : Public Auction Wednesday, May 24, 1972. New York: Sotheby Parke-Bernet, 1972.

APA

(1972). 20th century american paintings, sculpture, watercolors & drawings : public auction wednesday, may 24, 1972. New York: Sotheby Parke-Bernet.

Chicago

20th Century American Paintings, Sculpture, Watercolors & Drawings: Public Auction Wednesday, May 24, 1972. New York: Sotheby Parke-Bernet, 1972.