UNESCO Regional Seminar on Technical and Vocational Education Singapore, India. Ministry of Education and Culture, & Gopalan, K. (1979). UNESCO Regional Seminar on Technical and Vocational Education: Singapore, November 20-27, 1979 : country report, India. Ministry of Education and Culture, Govt. of India.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUNESCO Regional Seminar on Technical and Vocational Education Singapore, India. Ministry of Education and Culture, और K. Gopalan. UNESCO Regional Seminar on Technical and Vocational Education: Singapore, November 20-27, 1979 : Country Report, India. New Delhi: Ministry of Education and Culture, Govt. of India, 1979.
एमएलए (8वां संस्करण) प्रशस्ति पत्रUNESCO Regional Seminar on Technical and Vocational Education Singapore, et al. UNESCO Regional Seminar on Technical and Vocational Education: Singapore, November 20-27, 1979 : Country Report, India. Ministry of Education and Culture, Govt. of India, 1979.