Παραπομπή APA

Cousins, D. (1941). Teach yourself book - keeping. The english language book society.

Παραπομπή Chicago Style

Cousins, Donald. Teach Yourself Book - Keeping. London: The english language book society, 1941.

Παραπομπή MLA

Cousins, Donald. Teach Yourself Book - Keeping. The english language book society, 1941.