Bossing, N. L. (1966). Principles of secondary education./2 e (2nd ed.). Prentice-Hall.
शिकागो स्टाइल उद्धरणBossing, Nelson L. Principles of Secondary Education./2 E. 2nd ed. New Delhi: Prentice-Hall, 1966.
एमएलए उद्धरणBossing, Nelson L. Principles of Secondary Education./2 E. 2nd ed. Prentice-Hall, 1966.
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