Cita APA (7th ed.)

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.

Cita Chicago (17th ed.)

Barnard Chris, Gilbert Francis, i 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.

Cita MLA (9th ed.)

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.