Παραπομπή σε μορφή APA (7η εκδ.)

Birkeland, C. (1987). Comparison between Atlantic and Pacific tropical marine coastal ecosystems: Community structure, ecological processes and productivity. UNESCO-COMAR.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Birkeland, Charles. Comparison Between Atlantic and Pacific Tropical Marine Coastal Ecosystems: Community Structure, Ecological Processes and Productivity. París: UNESCO-COMAR, 1987.

Παραπομπή σε μορφή MLA (9th εκδ.)

Birkeland, Charles. Comparison Between Atlantic and Pacific Tropical Marine Coastal Ecosystems: Community Structure, Ecological Processes and Productivity. UNESCO-COMAR, 1987.