Παραπομπή σε μορφή APA (7η εκδ.)

Meiere, H. (1949). Letter to Paul Heuduck, October 7, 1949. Saint Louis University Libraries Digitization Center.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Meiere, Hildreth. Letter to Paul Heuduck, October 7, 1949. Saint Louis University Libraries Digitization Center, 1949.

Παραπομπή σε μορφή MLA (8th εκδ.)

Meiere, Hildreth. Letter to Paul Heuduck, October 7, 1949. Saint Louis University Libraries Digitization Center, 1949.