APA-ийн эшлэл(7 дахь хэвлэлт)

(1999). Panbiogeography tracking the history of life / Robin C. Craw, John R. Grehan, and Michael J. Heads. [electronic resource].

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Panbiogeography Tracking the History of Life / Robin C. Craw, John R. Grehan, and Michael J. Heads. [electronic Resource]. 1999.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Panbiogeography Tracking the History of Life / Robin C. Craw, John R. Grehan, and Michael J. Heads. [electronic Resource]. 1999.