Παραπομπή APA

Dulles, A. (1971). history of apologetics. Hutchinsoin.

Παραπομπή Chicago Style

Dulles, Avery. History of Apologetics. London: Hutchinsoin, 1971.

Παραπομπή MLA

Dulles, Avery. History of Apologetics. Hutchinsoin, 1971.