APA (7 वां संस्करण) प्रशस्ति पत्र
International Labour Office, ebrary, Inc, & Kanawaty, G. (1992). Introduction to work study (4th (rev.) ed.). International Labour Office.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
International Labour Office, Inc ebrary, और George Kanawaty. Introduction to Work Study. 4th (rev.) ed. Geneva: International Labour Office, 1992.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
International Labour Office, et al. Introduction to Work Study. 4th (rev.) ed. International Labour Office, 1992.
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