APA (7th ed.) Citation

Roper, I., & Tiegreen, A. (2001). Yo-Yo's: Tricks to amaze your friends. HarperCollins Publishers.

Chicago Style (17th ed.) Citation

Roper, Ingrid, and Alan Tiegreen. Yo-Yo's: Tricks to Amaze Your Friends. New York: HarperCollins Publishers, 2001.

MLA (8th ed.) Citation

Roper, Ingrid, and Alan Tiegreen. Yo-Yo's: Tricks to Amaze Your Friends. HarperCollins Publishers, 2001.

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