APA

Krishna Iyer P. R., . (1970). Elements of economics, Vol.01. : .

Chicago

Krishna Iyer P R, . 1970. Elements of economics, Vol.01. : .

Harvard

Krishna Iyer P. R., . (1970). Elements of economics, Vol.01. : .

MLA

Krishna Iyer P R, . Elements of economics, Vol.01. : . 1970.