Cita APA (7a ed.)

Professional Secretaries International. (1997). OfficePro. Professional Secretaries International.

Cita Chicago Style (17a ed.)

Professional Secretaries International. OfficePro. Kansas City, MO: Professional Secretaries International, 1997.

Cita MLA (9a ed.)

Professional Secretaries International. OfficePro. Professional Secretaries International, 1997.