Mallinson, G. (1975). Science: Understanding your environment, level 4 (Teacher's ed.). Silver Burdett.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMallinson, George. Science: Understanding Your Environment, Level 4. Teacher's ed. Morristown, NJ: Silver Burdett, 1975.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMallinson, George. Science: Understanding Your Environment, Level 4. Teacher's ed. Silver Burdett, 1975.
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