Schwager, M. (1949). Letter to Paul Heuduck, October 5, 1949. Saint Louis University Libraries Digitization Center.
Chicago-стиль цитированияSchwager, Mortimer. Letter to Paul Heuduck, October 5, 1949. Saint Louis University Libraries Digitization Center, 1949.
MLA-цитированиеSchwager, Mortimer. Letter to Paul Heuduck, October 5, 1949. Saint Louis University Libraries Digitization Center, 1949.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.