Ali, A. (2004). Reference service and the digital sources of information. Ess Ess Publications.
Citazione stile Chigago Style (17a edizione)Ali, Amjad. Reference Service and the Digital Sources of Information. New Delhi: Ess Ess Publications, 2004.
Citatione MLA (9a ed.)Ali, Amjad. Reference Service and the Digital Sources of Information. Ess Ess Publications, 2004.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.