APA
Kumar Krishna, . (1992). What Is Worth Teaching ? Third Edition. New Delhi: Orient Longman.
Chicago
Kumar Krishna, . 1992. What Is Worth Teaching ? Third Edition. New Delhi: Orient Longman.
Harvard
Kumar Krishna, . (1992). What Is Worth Teaching ? Third Edition. New Delhi: Orient Longman.
MLA
Kumar Krishna, . What Is Worth Teaching ? Third Edition. New Delhi: Orient Longman. 1992.