Παραπομπή σε μορφή APA (7η εκδ.)

Flick, L. F. (1899). Letter, To: "My Dear Doctor Middleton" From: Lawrence F. Flick, M.D., January 21, 1899.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Flick, Lawrence F. Letter, To: "My Dear Doctor Middleton" From: Lawrence F. Flick, M.D., January 21, 1899. 1899.

Παραπομπή σε μορφή MLA (8th εκδ.)

Flick, Lawrence F. Letter, To: "My Dear Doctor Middleton" From: Lawrence F. Flick, M.D., January 21, 1899. 1899.