Gaya APA

B.Walstad, W. (2002). STUDY GUIDE TO ACCOMPANY MCCONNELL BRUE ECONOMICS (15). Jakarta: Mc-Graw Hill.

Gaya MLA

B.Walstad, William. "STUDY GUIDE TO ACCOMPANY MCCONNELL BRUE ECONOMICS". 15 Jakarta: Mc-Graw Hill, 2002. Buku Inti.