APA (7th ed.) Citation

Klugman, H., & Wolf, A. (1971). Can you swallow a squiggle?: A beginning book about shapes. Wonder Books.

Chicago Style (17th ed.) Citation

Klugman, Hertha, and Ann Wolf. Can You Swallow a Squiggle?: A Beginning Book About Shapes. New York: Wonder Books, 1971.

MLA (9th ed.) Citation

Klugman, Hertha, and Ann Wolf. Can You Swallow a Squiggle?: A Beginning Book About Shapes. Wonder Books, 1971.

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