(1979). The 1980 Directory of Library Systems in New York State with Listings Current as of December 1979.
Citazione stile Chigago Style (17a edizione)The 1980 Directory of Library Systems in New York State with Listings Current as of December 1979. 1979.
Citatione MLA (9a ed.)The 1980 Directory of Library Systems in New York State with Listings Current as of December 1979. 1979.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.