Gaya APA

Grolier young knowledge: Rocks and fossils. (2005). Hongkong: Grolier.

Gaya Chicago

Grolier young knowledge: Rocks and fossils. . Hongkong: Grolier, 2005. Buku.

Gaya MLA

Grolier young knowledge: Rocks and fossils. . Hongkong: Grolier, 2005. Buku.

Gaya Turabian

Grolier young knowledge: Rocks and fossils. Hongkong: Grolier, 2005. Buku.