Citazione Stile APA (7a Edizione)

Kumar, S. (2015). Communication Skills (2nd ed.). Oxford.

Citazione stile Chigago Style (17a edizione)

Kumar, Sanjay. Communication Skills. 2nd ed. NewDelhi: Oxford, 2015.

Citatione MLA (9a ed.)

Kumar, Sanjay. Communication Skills. 2nd ed. Oxford, 2015.