APA

Lipsey R. G., . (1966). Introduction to positive economics. : ELBS, London.

Chicago

Lipsey Richard G, . 1966. Introduction to positive economics. : ELBS, London.

Harvard

Lipsey R. G., . (1966). Introduction to positive economics. : ELBS, London.

MLA

Lipsey Richard G, . Introduction to positive economics. : ELBS, London. 1966.