[et.al.], .. (1976). Study guide and problems to accompany Lipsey, Sparks, and Steiner economics. Harper & Row.
Chicago Style Citation[et.al.], ... Study Guide and Problems to Accompany Lipsey, Sparks, and Steiner Economics. Harper & Row, 1976.
MLA Citation[et.al.], ... Study Guide and Problems to Accompany Lipsey, Sparks, and Steiner Economics. Harper & Row, 1976.
Warning: These citations may not always be 100% accurate.