APA (7 वां संस्करण) प्रशस्ति पत्र

INTERNATIONAL LABOUR OFFICE. (1977). INTRODUCTION TO WORKS STUDY (REV. ED.). INTERNATIONAL LABOUR ORGANIZATION.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

INTERNATIONAL LABOUR OFFICE. INTRODUCTION TO WORKS STUDY. REV. ED. GENEVA: INTERNATIONAL LABOUR ORGANIZATION, 1977.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

INTERNATIONAL LABOUR OFFICE. INTRODUCTION TO WORKS STUDY. REV. ED. INTERNATIONAL LABOUR ORGANIZATION, 1977.