Gaya APA

Locker, K, O., Kaczmarek, S, K. (2011). Business Communication: building critical skills (5th ed.). New York: McGraw-Hill.

Gaya MLA

Locker, Kitty, O.., Kaczmarek, Stephen, Kyo. "Business Communication: building critical skills". 5th ed. New York: McGraw-Hill, 2011. Text.