APA

McKean J. R., Wykstra R. A., . (1971). Readings in introductory economics. New York: Harper & Row.

Chicago

McKean John R, Wykstra Ronald A, . 1971. Readings in introductory economics. New York: Harper & Row.

Harvard

McKean J. R., Wykstra R. A., . (1971). Readings in introductory economics. New York: Harper & Row.

MLA

McKean John R, Wykstra Ronald A, . Readings in introductory economics. New York: Harper & Row. 1971.