APA (7th ed.) Citation

Ziefert, H., & Plecas, J. (2000). Grandpas are for finding worms. Puffin Books.

Chicago Style (17th ed.) Citation

Ziefert, Harriet, and Jennifer Plecas. Grandpas Are for Finding Worms. New York, NY: Puffin Books, 2000.

MLA (8th ed.) Citation

Ziefert, Harriet, and Jennifer Plecas. Grandpas Are for Finding Worms. Puffin Books, 2000.