APA (7th ed.) Citation

Helm, P. (1973). The varieties of belief. Allen and Unwin [u.a.].

Chicago Style (17th ed.) Citation

Helm, Paul. The Varieties of Belief. London [u.a.]: Allen and Unwin [u.a.], 1973.

MLA (9th ed.) Citation

Helm, Paul. The Varieties of Belief. Allen and Unwin [u.a.], 1973.