Παραπομπή σε μορφή APA (7η εκδ.)

Aulenback, K. R. (2009). Identification Guide to the Fossil Plants of the Horseshoe Canyon Formation of Drumheller, Alberta. University Of Calgary Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Aulenback, Kevin R. Identification Guide to the Fossil Plants of the Horseshoe Canyon Formation of Drumheller, Alberta. University Of Calgary Press, 2009.

Παραπομπή σε μορφή MLA (9th εκδ.)

Aulenback, Kevin R. Identification Guide to the Fossil Plants of the Horseshoe Canyon Formation of Drumheller, Alberta. University Of Calgary Press, 2009.