APA

Mansfield E., .Principles of microeconomics. New Yor: W.W. Nortn & Co.

Chicago

Mansfield Edwin, .Principles of microeconomics. New Yor: W.W. Nortn & Co.

Harvard

Mansfield E., .Principles of microeconomics. New Yor: W.W. Nortn & Co.

MLA

Mansfield Edwin, .New Yor: W.W. Nortn & Co. .