APA (7th ed.) Citation

Widder, R. B. (1966). A Pictorial treasury of the Smithsonian Institution. Chilton Books.

Chicago Style (17th ed.) Citation

Widder, Robert B. A Pictorial Treasury of the Smithsonian Institution. Philadelphia: Chilton Books, 1966.

MLA (9th ed.) Citation

Widder, Robert B. A Pictorial Treasury of the Smithsonian Institution. Chilton Books, 1966.

Warning: These citations may not always be 100% accurate.