APA Style

Dubicka, I., O'Keeffe, M. (2011). Market Leader : Advanced Business English Active Teach, 3rd Edition. (3rd.). : Pearson.

MLA Style

Dubicka, Iwonna., O'Keeffe, Margaret. "Market Leader : Advanced Business English Active Teach, 3rd Edition.". 3rd. : Pearson, 2011. Koleksi Multimedia / CD-ROM.