Παραπομπή APA

Ranganathan, S. R. (1960). Colon classification (6.). Sarada Ranganathan Endowment.

Παραπομπή Chicago Style

Ranganathan, S R. Colon Classification. 6. Bangalore: Sarada Ranganathan Endowment, 1960.

Παραπομπή MLA

Ranganathan, S R. Colon Classification. 6. Sarada Ranganathan Endowment, 1960.