APA
Fichter J. H., Frein G. H., . (1968). Celibacy : the necessary option. New York: Herder and Herder.
Chicago
Fichter Joseph H, Frein George H, . 1968. Celibacy : the necessary option. New York: Herder and Herder.
Harvard
Fichter J. H., Frein G. H., . (1968). Celibacy : the necessary option. New York: Herder and Herder.
MLA
Fichter Joseph H, Frein George H, . Celibacy : the necessary option. New York: Herder and Herder. 1968.
