Cita APA (7th ed.)
Lutzer, E. W. (1981). The necessity of ethical absolutes. Zondervan publ. house.
Cita Chicago (17th ed.)
Lutzer, Erwin W. The Necessity of Ethical Absolutes. Chicago: Zondervan publ. house, 1981.
Cita MLA (9th ed.)
Lutzer, Erwin W. The Necessity of Ethical Absolutes. Zondervan publ. house, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.