Cita APA (7th ed.)
Ferguson, D. (1998). The great commandment principle. Tyndale.
Cita Chicago (17th ed.)
Ferguson, David. The Great Commandment Principle. Wheaton: Tyndale, 1998.
Cita MLA (9th ed.)
Ferguson, David. The Great Commandment Principle. Tyndale, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.