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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)UNESCO Regional Seminar on Technical and Vocational Education Singapore, India. Ministry of Education and Culture, و 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.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)UNESCO 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.