APA Style

Locker, K, O, S, K. (2009). Business Communication Building Critical Skills (4th.ed) (4th Ed). Boston: McGraw-Hill Irwin.

MLA Style

Locker, Kitty, O.;Kaczmarek,, Stephen, Kyo.. "Business Communication Building Critical Skills (4th.ed)". 4th Ed Boston: McGraw-Hill Irwin, 2009. Text.