APA (7th ed.) Citation

Joyce, G. H. (1923). Principles of natural theology. Longmans.

Chicago Style (17th ed.) Citation

Joyce, George H. Principles of Natural Theology. London: Longmans, 1923.

MLA (9th ed.) Citation

Joyce, George H. Principles of Natural Theology. Longmans, 1923.

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