APA

Lipsey R. G., Steiner P. O. & Purvis D. D. (1996). Economics. New York,NY: Harper Collins College Publishers.

Chicago

Lipsey Richard G, Steiner Peter Otto and Purvis Douglas D. 1996. Economics. New York,NY: Harper Collins College Publishers.

Harvard

Lipsey R. G., Steiner P. O. and Purvis D. D. (1996). Economics. New York,NY: Harper Collins College Publishers.

MLA

Lipsey Richard G, Steiner Peter Otto and Purvis Douglas D. Economics. New York,NY: Harper Collins College Publishers. 1996.