Παραπομπή APA

Posses, F. (1971). Selling to the Americans. Buisness Books.

Παραπομπή Chicago Style

Posses, Frederick. Selling to the Americans. London: Buisness Books, 1971.

Παραπομπή MLA

Posses, Frederick. Selling to the Americans. Buisness Books, 1971.