APA-viite

Baber, E. (2011). Fifty ways to improve your business english using internet without too much effort. Orient blackswan.

Chicago-tyylinen lähdeviittaus

Baber, Eric. Fifty Ways to Improve Your Business English Using Internet Without Too Much Effort. Hyderabad: Orient blackswan, 2011.

MLA-viite

Baber, Eric. Fifty Ways to Improve Your Business English Using Internet Without Too Much Effort. Orient blackswan, 2011.