Steiner-Prag, E. F. (1964). American library directory: A classified list of libraries in the United States and Canada, with personnel and statistical data plus a selected list of libraries around the world (24th ed.). New York: R. R. Bowker.
Παραπομπή Chicago StyleSteiner-Prag, Eleanor F. American Library Directory: A Classified List of Libraries in the United States and Canada, With Personnel and Statistical Data Plus a Selected List of Libraries Around the World. 24th ed. New York: R. R. Bowker, 1964.
Παραπομπή MLASteiner-Prag, Eleanor F. American Library Directory: A Classified List of Libraries in the United States and Canada, With Personnel and Statistical Data Plus a Selected List of Libraries Around the World. 24th ed. New York: R. R. Bowker, 1964.