Heuduck, P. (1946). Letter to Mortimer Schwager, July 1, 1946. Saint Louis University Libraries Digitization Center.
Stile di citazione ChicagoHeuduck, Paul. Letter to Mortimer Schwager, July 1, 1946. Saint Louis University Libraries Digitization Center, 1946.
Citazione MLAHeuduck, Paul. Letter to Mortimer Schwager, July 1, 1946. Saint Louis University Libraries Digitization Center, 1946.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.