Wenham, M. (1995). Understanding primary science: Ideas, concepts and explanations (Second edition.). Paul Chapman Pub. ; SAGE Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWenham, Martin. Understanding Primary Science: Ideas, Concepts and Explanations. Second edition. London : Thousand Oaks, Calif.: Paul Chapman Pub. ; SAGE Publications, 1995.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWenham, Martin. Understanding Primary Science: Ideas, Concepts and Explanations. Second edition. Paul Chapman Pub. ; SAGE Publications, 1995.
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