APA (7th ed.) Citation

Kertell, L. M., & Maslen, J. R. (2006). Bob books: Set 2, Advanced beginners. Scholastic.

Chicago Style (17th ed.) Citation

Kertell, Lynn Maslen, and John R. Maslen. Bob Books: Set 2, Advanced Beginners. New York: Scholastic, 2006.

MLA (9th ed.) Citation

Kertell, Lynn Maslen, and John R. Maslen. Bob Books: Set 2, Advanced Beginners. Scholastic, 2006.