Παραπομπή σε μορφή APA (7η εκδ.)

Öpik, A. A. (1982). Dolichometopid trilobites of Queensland, Northern Territory, and New South Wales. Australian Govt. Pub. Service.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Öpik, A. A. Dolichometopid Trilobites of Queensland, Northern Territory, and New South Wales. Canberra: Australian Govt. Pub. Service, 1982.

Παραπομπή σε μορφή MLA (8th εκδ.)

Öpik, A. A. Dolichometopid Trilobites of Queensland, Northern Territory, and New South Wales. Australian Govt. Pub. Service, 1982.