Cita APA (7a ed.)

TITMAN L.G. (1995). THE EFFECTIVE OFFICE. EXCEL BOOKS.

Cita Chicago Style (17a ed.)

TITMAN L.G. THE EFFECTIVE OFFICE. EXCEL BOOKS, 1995.

Cita MLA (9a ed.)

TITMAN L.G. THE EFFECTIVE OFFICE. EXCEL BOOKS, 1995.