APA (7 वां संस्करण) प्रशस्ति पत्र

U.S. Dept. of Labor. (1915). Regulations of the Department of Labor, in effect October 15, 1915. Govt. Print Off.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

U.S. Dept. of Labor. Regulations of the Department of Labor, in Effect October 15, 1915. Washington: Govt. Print Off, 1915.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

U.S. Dept. of Labor. Regulations of the Department of Labor, in Effect October 15, 1915. Govt. Print Off, 1915.