Cita APA (7a ed.)

Barr, D. W. (1972). Communication for business, professional, and technical students (2a. ed.). Wadsworth.

Cita Chicago Style (17a ed.)

Barr, Doris Wilson. Communication for Business, Professional, and Technical Students. 2a. ed. Belmont: Wadsworth, 1972.

Cita MLA (9a ed.)

Barr, Doris Wilson. Communication for Business, Professional, and Technical Students. 2a. ed. Wadsworth, 1972.