Cita APA (7th ed.)

BARNES C. (1988). PROFESSIONAL EXCELLENCE FOR SECRETARIES. CRISP PUBLICATION.

Cita Chicago (17th ed.)

BARNES C. PROFESSIONAL EXCELLENCE FOR SECRETARIES. CALIFORNIA: CRISP PUBLICATION, 1988.

Cita MLA (9th ed.)

BARNES C. PROFESSIONAL EXCELLENCE FOR SECRETARIES. CRISP PUBLICATION, 1988.

Atenció: Aquestes cites poden no estar 100% correctes.