APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.