Barnard Chris, Gilbert Francis, & McGregor, P. (2007). Asking questions in biology: Guide to hypothesis-testing, experimental design and presentation in practical work and research projects (Third edition.). Pearson Benjamin Cummings.
Lua i Stíl Chicago (17ú heag.)Barnard Chris, Gilbert Francis, agus Peter McGregor. Asking Questions in Biology: Guide to Hypothesis-testing, Experimental Design and Presentation in Practical Work and Research Projects. Third edition. Harlow: Pearson Benjamin Cummings, 2007.
Lua MLA (9ú heag.)Barnard Chris, et al. Asking Questions in Biology: Guide to Hypothesis-testing, Experimental Design and Presentation in Practical Work and Research Projects. Third edition. Pearson Benjamin Cummings, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.