APA (7th ed.) Citation

Boas, W., & Wrenn, H. H. (1966). What is a picture? Schocken.

Chicago Style (17th ed.) Citation

Boas, W., and Harold Holmes Wrenn. What Is a Picture? New York: Schocken, 1966.

MLA (9th ed.) Citation

Boas, W., and Harold Holmes Wrenn. What Is a Picture? Schocken, 1966.

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