APA način citiranja (7. izdanje)

Wendy Pfeffer. (2003). Wiggling Worms at Work (Let's-Read-and-Find-Out Science 2) (1.). HarperCollins.

Čikaški stil citiranja (17. izdanje)

Wendy Pfeffer. Wiggling Worms at Work (Let's-Read-and-Find-Out Science 2). 1. HarperCollins, 2003.

MLA način citiranja (9. izdanje)

Wendy Pfeffer. Wiggling Worms at Work (Let's-Read-and-Find-Out Science 2). 1. HarperCollins, 2003.