APA (7th ed.) Citation
Machen, J. G. (1925). What is faith? The Macmillan company.
Chicago Style (17th ed.) Citation
Machen, J. Gresham. What Is Faith? New York: The Macmillan company, 1925.
MLA (9th ed.) Citation
Machen, J. Gresham. What Is Faith? The Macmillan company, 1925.
Warning: These citations may not always be 100% accurate.