Cita APA (7th ed.)

Boyd, W. P., & Lesikar, R. V. (1959). Productive business writing. Prentice-Hall.

Cita Chicago (17th ed.)

Boyd, William Paxton, i Raymond Vincent Lesikar. Productive Business Writing. Englewood Cliffs, N.J: Prentice-Hall, 1959.

Cita MLA (9th ed.)

Boyd, William Paxton, i Raymond Vincent Lesikar. Productive Business Writing. Prentice-Hall, 1959.