Gaya APA

Penrose, J, M., Rasberry, R, J. (2004). BUSINESS COMMUNICATION FOR MANAGERS (5th). Andover: SOUTH-WESTERN CENGAGE LEARNING.

Gaya MLA

Penrose, John, M.., Rasberry, Robert, J.. "BUSINESS COMMUNICATION FOR MANAGERS". 5th Andover: SOUTH-WESTERN CENGAGE LEARNING, 2004. Text.