Christensen, H. N. (1964). pH and dissociation: A learning program for students of the biological and medical sciences (2d ed.). Saunders College Publishing.
Chicago-viite (17. p.)Christensen, Halvor N. PH and Dissociation: A Learning Program for Students of the Biological and Medical Sciences. 2d ed. Philadelphia: Saunders College Publishing, 1964.
MLA-viite (9. p.)Christensen, Halvor N. PH and Dissociation: A Learning Program for Students of the Biological and Medical Sciences. 2d ed. Saunders College Publishing, 1964.
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