Singh, A. (1981). Attitudes of secondary school teachers towards specific topics in traffic education. Transport and Road Research Laboratory.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSingh, Amarjit. Attitudes of Secondary School Teachers Towards Specific Topics in Traffic Education. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1981.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSingh, Amarjit. Attitudes of Secondary School Teachers Towards Specific Topics in Traffic Education. Transport and Road Research Laboratory, 1981.
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