Podolsky, A. (1991). Public Libraries in 50 States and the District of Columbia: 1989. E.D. TABS.
Citazione stile Chigago Style (17a edizione)Podolsky, Arthur. Public Libraries in 50 States and the District of Columbia: 1989. E.D. TABS. 1991.
Citatione MLA (9a ed.)Podolsky, Arthur. Public Libraries in 50 States and the District of Columbia: 1989. E.D. TABS. 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.