Gaya APA

Locker, K, O., Kienzler, D, S. (1989). Business and adminstrasive communication (Ed. 9). United States of America: McGraw-Hill Book Company.

Gaya MLA

Locker, Kitty, O., Kienzler, Donna, S. "Business and adminstrasive communication". Ed. 9 United States of America: McGraw-Hill Book Company, 1989. Printed Book.