Παραπομπή σε μορφή APA (7η εκδ.)

Norris, G. W., & Norris, W. F. (1886). The early history of medicine in Philadelphia. By George W. Norris. [Collins Printing House].

Παραπομπή σε μορφή Chicago (17η εκδ.)

Norris, George W., και William Fisher Norris. The Early History of Medicine in Philadelphia. By George W. Norris. Philadelphia: [Collins Printing House], 1886.

Παραπομπή σε μορφή MLA (8th εκδ.)

Norris, George W., και William Fisher Norris. The Early History of Medicine in Philadelphia. By George W. Norris. [Collins Printing House], 1886.