Wagner, G. (1940). Letter in German to Paul Heuduck, February 12, 1940. Saint Louis University Libraries Digitization Center.
Chicago Style (17th ed.) CitationWagner, Gerdt. Letter in German to Paul Heuduck, February 12, 1940. Saint Louis University Libraries Digitization Center, 1940.
MLA引文Wagner, Gerdt. Letter in German to Paul Heuduck, February 12, 1940. Saint Louis University Libraries Digitization Center, 1940.
警告:這些引文格式不一定是100%准確.