Dyfyniad APA

Krishan Kumar; Author. (1997). Theory of classification (Ed.4 rev.).

Dyfyniad Arddull Chicago

Krishan Kumar; Author. Theory of Classification. Ed.4 rev. New Delhi, Vikas Publishing, 1997.

Dyfyniad MLA

Krishan Kumar; Author. Theory of Classification. Ed.4 rev. 1997.

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