Gaya APA

Locker, K, O., Kaczmarek, S, K. (2004). Business communication: building critical skills (2). Boston, Massachusetts: McGraw-Hill.

Gaya MLA

Locker, Kitty, O.., Kaczmarek, Stephen, Kyo. "Business communication: building critical skills". 2 Boston, Massachusetts: McGraw-Hill, 2004. Text.