Gaya APA

Locker, K, O., Kaczmarek, S, K. (2007). Business Communication : Building critical Skill (3). Singapore: Mc Graw Hill Book Company Inc.

Gaya MLA

Locker, Kitty, O.., Kaczmarek, Stephen, Kyo. "Business Communication : Building critical Skill". 3 Singapore: Mc Graw Hill Book Company Inc, 2007. Texts.