APA

Dev Raj Singh, University of Delhi. Faculty of Arts. Department of Library and Information Science & University of Delhi. Faculty of Arts. Department of Library and Information Science. (1984). Study of fluctuations in the subscription rates of Economics and Sociology periodicals subscribed by Ratan Tata Library during 1978-1983. : .

Chicago

Dev Raj Singh, University of Delhi. Faculty of Arts. Department of Library and Information Science and University of Delhi. Faculty of Arts. Department of Library and Information Science. 1984. Study of fluctuations in the subscription rates of Economics and Sociology periodicals subscribed by Ratan Tata Library during 1978-1983. : .

Harvard

Dev Raj Singh, University of Delhi. Faculty of Arts. Department of Library and Information Science and University of Delhi. Faculty of Arts. Department of Library and Information Science. (1984). Study of fluctuations in the subscription rates of Economics and Sociology periodicals subscribed by Ratan Tata Library during 1978-1983. : .

MLA

Dev Raj Singh, University of Delhi. Faculty of Arts. Department of Library and Information Science and University of Delhi. Faculty of Arts. Department of Library and Information Science. Study of fluctuations in the subscription rates of Economics and Sociology periodicals subscribed by Ratan Tata Library during 1978-1983. : . 1984.