Gaya APA
Bingham, R, C., Walstad, W, B. (1990).
Study guide to accompany: microeconomics .
Illinois:
McGraw - Hill publishing Company.
Gaya MLA
Bingham, Robert, C.., Walstad, William, B.
"Study guide to accompany: microeconomics".
Illinois:
McGraw - Hill publishing Company,
1990.
Text.