Gaya APA

Locker, K, O., Kaczmarek, S, K. (2007). Business communication : building critical skills ed. 3 (3). Boston: McGraw Hill.

Gaya MLA

Locker, Kitty, O., Kaczmarek, Stephen, Kyo. "Business communication : building critical skills ed. 3". 3 Boston: McGraw Hill, 2007. Text.