Harnack, A. v. (1901). What is Christianity? New York: G.P. Putnam's Sons : London : Williams and Norgate.
Chicago Style CitationHarnack, Adolf von. What Is Christianity? New York: G.P. Putnam's Sons : London : Williams and Norgate, 1901.
MLA CitationHarnack, Adolf von. What Is Christianity? New York: G.P. Putnam's Sons : London : Williams and Norgate, 1901.
Warning: These citations may not always be 100% accurate.