APA (7th ed.) Citation

Wick, W., & Marzollo, J. (2000). I spy extreme challenger: A book of picture riddles. Scholastic.

Chicago Style (17th ed.) Citation

Wick, Walter, and Jean Marzollo. I Spy Extreme Challenger: A Book of Picture Riddles. New York: Scholastic, 2000.

MLA (8th ed.) Citation

Wick, Walter, and Jean Marzollo. I Spy Extreme Challenger: A Book of Picture Riddles. Scholastic, 2000.

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