(1984). The professional secretary's handbook. Houghton Mifflin.
Cita Chicago (17th ed.)The Professional Secretary's Handbook. Boston: Houghton Mifflin, 1984.
Cita MLA (9th ed.)The Professional Secretary's Handbook. Houghton Mifflin, 1984.
Atenció: Aquestes cites poden no estar 100% correctes.