APA (7th ed.) Citation

Willis, J., & Ross, T. (1990). Dr. Xargle's book of earth tiggers. Andersen.

Chicago Style (17th ed.) Citation

Willis, Jeanne, and Tony Ross. Dr. Xargle's Book of Earth Tiggers. Andersen, 1990.

MLA (9th ed.) Citation

Willis, Jeanne, and Tony Ross. Dr. Xargle's Book of Earth Tiggers. Andersen, 1990.

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