Cita APA (7a ed.)
Guffey, M. E. (1998). Essentials of business communication (4th ed.). South-Western College Pub..
Cita Chicago Style (17a ed.)
Guffey, Mary Ellen. Essentials of Business Communication. 4th ed. Cincinnati, Ohio: South-Western College Pub., 1998.
Cita MLA (9a ed.)
Guffey, Mary Ellen. Essentials of Business Communication. 4th ed. South-Western College Pub., 1998.
Precaución: Estas citas no son 100% exactas.