APA (7th ed.) Citation

Helm, P. (2004). John Calvin's ideas. Oxford University Press.

Chicago Style (17th ed.) Citation

Helm, Paul. John Calvin's Ideas. Oxford [u.a.]: Oxford University Press, 2004.

MLA (8th ed.) Citation

Helm, Paul. John Calvin's Ideas. Oxford University Press, 2004.

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