APA

Lipsey R. G. C. A. K., . (1999). Principles of economics. : Kalyani Publishers, New Delhi.

Chicago

Lipsey Richard G Chrystal Alec K, . 1999. Principles of economics. : Kalyani Publishers, New Delhi.

Harvard

Lipsey R. G. C. A. K., . (1999). Principles of economics. : Kalyani Publishers, New Delhi.

MLA

Lipsey Richard G Chrystal Alec K, . Principles of economics. : Kalyani Publishers, New Delhi. 1999.