Christensen, H. N. (1964). pH and dissociation: A learning program for students of the biological and medical sciences (2d ed.). Saunders College Publishing.
Lua i Stíl Chicago (17ú heag.)Christensen, Halvor N. PH and Dissociation: A Learning Program for Students of the Biological and Medical Sciences. 2d ed. Philadelphia: Saunders College Publishing, 1964.
Lua MLA (9ú heag.)Christensen, Halvor N. PH and Dissociation: A Learning Program for Students of the Biological and Medical Sciences. 2d ed. Saunders College Publishing, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.