Gaya APA

Locker, K, O., Kaczmarek, S, K. (2007). Bussines Communication: building critical skills (Tiga). America: McGraw-Hill.

Gaya MLA

Locker, Kitty, O.., Kaczmarek, Stephen, Kyo. "Bussines Communication: building critical skills". Tiga America: McGraw-Hill, 2007. Text.