Heitz, J., & Giffen, C. (2008). Practicing biology: A student workbook (Third edition.). Pearson Eduction.
Chicago Style (17. basım) AtıfHeitz, Jean, ve Cynthia Giffen. Practicing Biology: A Student Workbook. Third edition. San Francisco, CA: Pearson Eduction, 2008.
MLA (9th ed.) AtıfHeitz, Jean, ve Cynthia Giffen. Practicing Biology: A Student Workbook. Third edition. Pearson Eduction, 2008.
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