APA način citiranja (7. izdanje)

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

Čikaški stil citiranja (17. izdanje)

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

MLA način citiranja (8. izdanje)

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