Gaya APA

Bingham, R, C., Walstad, W, B. (1987). Study guide to accompany McConnell: economics ed 3 . Cincinnati: McGraw - Hill publishing Company.

Gaya MLA

Bingham, Robert, C.., Walstad, William, B. "Study guide to accompany McConnell: economics ed 3". Cincinnati: McGraw - Hill publishing Company, 1987. Text.