Παραπομπή APA
Crawford, J. C. (2000). Evaluation of library and information services (2nd ed.). London: Aslib Know How Guide.
Παραπομπή Chicago StyleCrawford, John C. Evaluation of Library and Information Services. 2nd ed. London: Aslib Know How Guide, 2000.
Παραπομπή MLACrawford, John C. Evaluation of Library and Information Services. 2nd ed. London: Aslib Know How Guide, 2000.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.