Gaya APA

Walstad, W, B., Bingham, R, C. (2002). Study Guide to Accompany McConell and Brue Economics (1). Boston: McGraw-Hil.

Gaya MLA

Walstad, William, B.., Bingham, Robert, C.. "Study Guide to Accompany McConell and Brue Economics". 1 Boston: McGraw-Hil, 2002. Text.