Cita APA (7a ed.)

Joyce, G. H. (1972). Principles of natural theology. AMS Press.

Cita Chicago Style (17a ed.)

Joyce, George Hayward. Principles of Natural Theology. New York: AMS Press, 1972.

Cita MLA (9a ed.)

Joyce, George Hayward. Principles of Natural Theology. AMS Press, 1972.