Cita APA (7th ed.)

Sukhija, P. (2010). E-Commerce: Opportunities & Challenges.

Cita Chicago (17th ed.)

Sukhija, Piyush. E-Commerce: Opportunities & Challenges. [s.l], 2010.

Cita MLA (9th ed.)

Sukhija, Piyush. E-Commerce: Opportunities & Challenges. 2010.