Cita APA (7a ed.)

Schwager, M. (1949). Letter to Paul Heuduck, September 13, 1949. Saint Louis University Libraries Digitization Center.

Cita Chicago Style (17a ed.)

Schwager, Mortimer. Letter to Paul Heuduck, September 13, 1949. Saint Louis University Libraries Digitization Center, 1949.

Cita MLA (8a ed.)

Schwager, Mortimer. Letter to Paul Heuduck, September 13, 1949. Saint Louis University Libraries Digitization Center, 1949.