APA (7th ed.) Citation

Krishan Kumar. (1979). Theory of classification (2nd rev. ed.). Vikas Pub.

Chicago Style (17th ed.) Citation

Krishan Kumar. Theory of Classification. 2nd rev. ed. New Delhi: Vikas Pub, 1979.

MLA (9th ed.) Citation

Krishan Kumar. Theory of Classification. 2nd rev. ed. Vikas Pub, 1979.