Gaya APA

Locker, K, O., Kaczmarek, S, K. (2011). Business Communication; Building Critical Skills (5). New York: McGraw-Hill.

Gaya MLA

Locker, Kitty, O.., Kaczmarek, Stephen, Kyo. "Business Communication; Building Critical Skills". 5 New York: McGraw-Hill, 2011. Text.