APA Style

Locker, K, O., Kaczmarek, S, K. (2007). Business communication : building critical skills (4th ed.). Boston: McGraw-Hill Irwin.

MLA Style

Locker, Kitty, O., Kaczmarek, Stephen, Kyo. "Business communication : building critical skills". 4th ed. Boston: McGraw-Hill Irwin, 2007. Computer File.