Cita APA (7th ed.)

Shurter, R. (1982). Effective letters in business. Tata Mc Graw Hill.

Cita Chicago (17th ed.)

Shurter, Robert. Effective Letters in Business. New Delhi: Tata Mc Graw Hill, 1982.

Cita MLA (9th ed.)

Shurter, Robert. Effective Letters in Business. Tata Mc Graw Hill, 1982.