Παραπομπή APA

Head, F. (1957). Meetings (6th ed.). Sir Issac Pitman and sons.

Παραπομπή Chicago Style

Head, F.D. Meetings. 6th ed. London: Sir Issac Pitman and sons, 1957.

Παραπομπή MLA

Head, F.D. Meetings. 6th ed. Sir Issac Pitman and sons, 1957.