APA (7. basım) Alıntı

Babbage, K. J. (2010). The extreme principle: What matters most, what works best. Rowman & Littlefield Education.

Chicago Style (17. basım) Atıf

Babbage, Keen J. The Extreme Principle: What Matters Most, What Works Best. Lanham: Rowman & Littlefield Education, 2010.

MLA (9th ed.) Atıf

Babbage, Keen J. The Extreme Principle: What Matters Most, What Works Best. Rowman & Littlefield Education, 2010.