Παραπομπή σε μορφή APA (7η εκδ.)

Christensen, H. N. (1964). pH and dissociation: A learning program for students of the biological and medical sciences (2d ed.). Saunders College Publishing.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Christensen, Halvor N. PH and Dissociation: A Learning Program for Students of the Biological and Medical Sciences. 2d ed. Philadelphia: Saunders College Publishing, 1964.

Παραπομπή σε μορφή MLA (9th εκδ.)

Christensen, Halvor N. PH and Dissociation: A Learning Program for Students of the Biological and Medical Sciences. 2d ed. Saunders College Publishing, 1964.