Cita APA (7th ed.)

Allard, L. (1994). How to improve your sales performance. UBS Publishers'.

Cita Chicago (17th ed.)

Allard, Lloyd. How to Improve Your Sales Performance. New Delhi: UBS Publishers', 1994.

Cita MLA (8th ed.)

Allard, Lloyd. How to Improve Your Sales Performance. UBS Publishers', 1994.