Παραπομπή σε μορφή APA (7η εκδ.)

Kullberg, C. (1998). Behaviour under predation risk in birds. Stockholm University, Dept. of Zoology.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Kullberg, Cecilia. Behaviour Under Predation Risk in Birds. Stockholm, Sweden: Stockholm University, Dept. of Zoology, 1998.

Παραπομπή σε μορφή MLA (8th εκδ.)

Kullberg, Cecilia. Behaviour Under Predation Risk in Birds. Stockholm University, Dept. of Zoology, 1998.