Gaya APA

KACZMAREK, S, K., LOCKER, K, O. (2004). Business communication: building critical skills . BOSTON: MCGRAW HILL-IRWIN.

Gaya MLA

KACZMAREK, STEPHEN, KYO., LOCKER, KITTY, O.. "Business communication: building critical skills". BOSTON: MCGRAW HILL-IRWIN, 2004. Text.