Smylie, John; Matthen, Mohan; Ariew, André (2002). Two Ways of Thinking About Fitness and Natural Selection. Journal of Philosophy. 99 (2): 55—83. doi:10.2307/3655552. ISSN0022-362X.
Smylie, John; Matthen, Mohan; Ariew, André (2002). Two Ways of Thinking About Fitness and Natural Selection. Journal of Philosophy. 99 (2): 55—83. doi:10.2307/3655552. ISSN0022-362X.