Cita APA (7th ed.)
Machen, J. G. (1925). What is faith? The Macmillan company.
Cita Chicago (17th ed.)
Machen, J. Gresham. What Is Faith? New York: The Macmillan company, 1925.
Cita MLA (9th ed.)
Machen, J. Gresham. What Is Faith? The Macmillan company, 1925.
Atenció: Aquestes cites poden no estar 100% correctes.