Wenham, M. (1995). Understanding primary science: Ideas, concepts and explanations (Second edition.). Paul Chapman Pub. ; SAGE Publications.
Cita Chicago (17th ed.)Wenham, Martin. Understanding Primary Science: Ideas, Concepts and Explanations. Second edition. London : Thousand Oaks, Calif.: Paul Chapman Pub. ; SAGE Publications, 1995.
Cita MLA (8th ed.)Wenham, Martin. Understanding Primary Science: Ideas, Concepts and Explanations. Second edition. Paul Chapman Pub. ; SAGE Publications, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.