Wallas, P. (1996). Electronic Publishing and Collection Development, a Subscription Agent's View.
Citazione stile Chigago Style (17a edizione)Wallas, Philip. Electronic Publishing and Collection Development, a Subscription Agent's View. 1996.
Citatione MLA (9a ed.)Wallas, Philip. Electronic Publishing and Collection Development, a Subscription Agent's View. 1996.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.