APA (7th ed.) Citation

Siddiqui, A., Duffuaa, S., & unknown. (2004). ePublishing: Challenges & Opportunities.

Chicago Style (17th ed.) Citation

Siddiqui, Atiq, Salih Duffuaa, and unknown. EPublishing: Challenges & Opportunities. 2004.

MLA (9th ed.) Citation

Siddiqui, Atiq, et al. EPublishing: Challenges & Opportunities. 2004.