Cita APA (7th ed.)

MCCOMAS D C. (1993). MODERN BUSINESS CORRESPONDENCE (6TH.). MACMILLAN.

Cita Chicago (17th ed.)

MCCOMAS D C. MODERN BUSINESS CORRESPONDENCE. 6TH. U.S.A: MACMILLAN, 1993.

Cita MLA (9th ed.)

MCCOMAS D C. MODERN BUSINESS CORRESPONDENCE. 6TH. MACMILLAN, 1993.