APA (7th ed.) Citation

Heard, G. (1948). Is God evident?: An essay toward a natural theology. Harper.

Chicago Style (17th ed.) Citation

Heard, Gerald. Is God Evident?: An Essay Toward a Natural Theology. New York: Harper, 1948.

MLA (9th ed.) Citation

Heard, Gerald. Is God Evident?: An Essay Toward a Natural Theology. Harper, 1948.