APA (7th ed.) Citation

Kumar, K. (1979). Theory of classification (2nd revised ed.). Vikas Publishing House Pvt., Ltd.

Chicago Style (17th ed.) Citation

Kumar, Krishan. Theory of Classification. 2nd revised ed. New Delhi: Vikas Publishing House Pvt., Ltd, 1979.

MLA (9th ed.) Citation

Kumar, Krishan. Theory of Classification. 2nd revised ed. Vikas Publishing House Pvt., Ltd, 1979.