Παραπομπή APA

Ranganathan, S., & Gopinath, M. (1963). Prolegomena to library classification (3rd ed.). Saraada Ranganathan endowment for library science.

Παραπομπή Chicago Style

Ranganathan, S.R, και M.A Gopinath. Prolegomena to Library Classification. 3rd ed. Bangalore: Saraada Ranganathan endowment for library science, 1963.

Παραπομπή MLA

Ranganathan, S.R, και M.A Gopinath. Prolegomena to Library Classification. 3rd ed. Saraada Ranganathan endowment for library science, 1963.