Gaya APA

Walstad, W, B., Bingham, R, C. (2002). Study Guide To Accompany McConnell And Brue Economics . America: Mc-Graw-Hill.

Gaya MLA

Walstad, William, B.., Bingham, Robert, C.. "Study Guide To Accompany McConnell And Brue Economics". America: Mc-Graw-Hill, 2002. Text.