APA (7th ed.) Citation

Helm, P. (1973). The varieties of belief / by Paul Helm. Allen and Unwin.

Chicago Style (17th ed.) Citation

Helm, Paul. The Varieties of Belief / by Paul Helm. Allen and Unwin, 1973.

MLA (9th ed.) Citation

Helm, Paul. The Varieties of Belief / by Paul Helm. Allen and Unwin, 1973.

Warning: These citations may not always be 100% accurate.