Παραπομπή APA

Blyth, C. (1969). American business cycles. George Allen and Unwin Ltd.

Παραπομπή Chicago Style

Blyth, C.A. American Business Cycles. London: George Allen and Unwin Ltd, 1969.

Παραπομπή MLA

Blyth, C.A. American Business Cycles. George Allen and Unwin Ltd, 1969.