APA (7 वां संस्करण) प्रशस्ति पत्र

TURNER, L. (1978). Oil companies in the international system. Allen and Unwin.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

TURNER, Louis. Oil Companies in the International System. London: Allen and Unwin, 1978.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

TURNER, Louis. Oil Companies in the International System. Allen and Unwin, 1978.