Cita APA

Waehrer, H. Y. (1973). Student exercise book for modern economics: Principles and policy. New York, New York: R. McNally.

Citación estilo Chicago

Waehrer, Helen Youngelson. Student Exercise Book for Modern Economics: Principles and Policy. New York, New York: R. McNally, 1973.

Cita MLA

Waehrer, Helen Youngelson. Student Exercise Book for Modern Economics: Principles and Policy. New York, New York: R. McNally, 1973.