APA-ийн эшлэл(7 дахь хэвлэлт)

Kathleen Weidner Zoehfeld. (2002). "Dinosaurs Big and Small (Let's-Read-and-Find-Out Science, Stage 1)". HarperCollins.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Kathleen Weidner Zoehfeld. "Dinosaurs Big and Small (Let's-Read-and-Find-Out Science, Stage 1)". HarperCollins, 2002.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Kathleen Weidner Zoehfeld. "Dinosaurs Big and Small (Let's-Read-and-Find-Out Science, Stage 1)". HarperCollins, 2002.