Παραπομπή σε μορφή APA (7η εκδ.)

Sombart, W., & Epstein, M. (1915). The quintessence of capitalism: A study of the history and psychology of the modern business man. E.P. Dutton.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Sombart, Werner, και Mordecai Epstein. The Quintessence of Capitalism: A Study of the History and Psychology of the Modern Business Man. New York: E.P. Dutton, 1915.

Παραπομπή σε μορφή MLA (8th εκδ.)

Sombart, Werner, και Mordecai Epstein. The Quintessence of Capitalism: A Study of the History and Psychology of the Modern Business Man. E.P. Dutton, 1915.