Παραπομπή σε μορφή APA (7η εκδ.)

(1981). Graduate study in the biological sciences at the University of Pittsbu rgh. University of Pittsburgh.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Graduate Study in the Biological Sciences at the University of Pittsbu Rgh. University of Pittsburgh, 1981.

Παραπομπή σε μορφή MLA (8th εκδ.)

Graduate Study in the Biological Sciences at the University of Pittsbu Rgh. University of Pittsburgh, 1981.