APA (7. basım) Alıntı

Wagner, G. (1940). Letter in German to Paul Heuduck, February 12, 1940. Saint Louis University Libraries Digitization Center.

Chicago Style (17. basım) Atıf

Wagner, Gerdt. Letter in German to Paul Heuduck, February 12, 1940. Saint Louis University Libraries Digitization Center, 1940.

MLA (8th ed.) Atıf

Wagner, Gerdt. Letter in German to Paul Heuduck, February 12, 1940. Saint Louis University Libraries Digitization Center, 1940.