APA aipamena

Schwager, M. (1947). Letter to Arno Heuduck, December 29, 1947. Saint Louis University Libraries Digitization Center.

Chicago Style aipamena

Schwager, Mortimer. Letter to Arno Heuduck, December 29, 1947. Saint Louis University Libraries Digitization Center, 1947.

MLA aipamena

Schwager, Mortimer. Letter to Arno Heuduck, December 29, 1947. Saint Louis University Libraries Digitization Center, 1947.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.