Gaya APA

Waugh, B. (2012). Letters from the Front : J. Gresham Machen's Correspondence from World War I . Phillipsburg, New Jersey: Abingdon Press.

Gaya MLA

Waugh, Barry. "Letters from the Front : J. Gresham Machen's Correspondence from World War I". Phillipsburg, New Jersey: Abingdon Press, 2012. Academic.