APA način citiranja (7. izdanje)

Kathleen Weidner Zoehfeld. (1994). What Lives in a Shell? (Let's-Read-and-Find-Out Science 1) (1.). HarperCollins.

Čikaški stil citiranja (17. izdanje)

Kathleen Weidner Zoehfeld. What Lives in a Shell? (Let's-Read-and-Find-Out Science 1). 1. HarperCollins, 1994.

MLA način citiranja (9. izdanje)

Kathleen Weidner Zoehfeld. What Lives in a Shell? (Let's-Read-and-Find-Out Science 1). 1. HarperCollins, 1994.