APA (7 वां संस्करण) प्रशस्ति पत्र

Chalmers, W. E. (1967). Crucial issues in industrial relations in Singapore. D. Moore Press.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Chalmers, William Ellison. Crucial Issues in Industrial Relations in Singapore. [Singapore]: D. Moore Press, 1967.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Chalmers, William Ellison. Crucial Issues in Industrial Relations in Singapore. D. Moore Press, 1967.