Leon, A. (1999). Fundamentals of Information Technology (2nd.). Vikas Publishing House PVT LTD.
Citazione stile Chigago Style (17a edizione)Leon, Alexis. Fundamentals of Information Technology. 2nd. Noida: Vikas Publishing House PVT LTD, 1999.
Citatione MLA (9a ed.)Leon, Alexis. Fundamentals of Information Technology. 2nd. Vikas Publishing House PVT LTD, 1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.