Ranganathan, S. R., & Gopinath, M. A. (1987). Colon classification (Ed. 7, basic and depth version.). Sarada Ranganathan Endowment for Library Science.
Chicago-viite (17. p.)Ranganathan, S. R., ja M. A. Gopinath. Colon Classification. Ed. 7, basic and depth version. Bangalore: Sarada Ranganathan Endowment for Library Science, 1987.
MLA-viite (9. p.)Ranganathan, S. R., ja M. A. Gopinath. Colon Classification. Ed. 7, basic and depth version. Sarada Ranganathan Endowment for Library Science, 1987.
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