Hewitt, P. G. (2013). Conceptual integrated science (Second edition.). Pearson.
Cita Chicago (17th ed.)Hewitt, Paul G. Conceptual Integrated Science. Second edition. Boston: Pearson, 2013.
Cita MLA (9th ed.)Hewitt, Paul G. Conceptual Integrated Science. Second edition. Pearson, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.