Goy, Ina (Ed.) and Eric Watkins (Ed.). Kant's Theory of Biology. Berlin, Boston: De Gruyter, 2015. Web. Retrieved 20 May. 2013, from http://www.degruyter.com/view/product/43450

Goy, I. (Ed.) & Watkins, E. (Ed.) (2015). Kant's Theory of Biology. Berlin, Boston: De Gruyter. Retrieved 20 May. 2013, from http://www.degruyter.com/view/product/43450

Goy, Ina (Ed.) and Eric Watkins (Ed.). 2015. Kant's Theory of Biology. Berlin, Boston: De Gruyter. Retrieved 20 May. 2013, from http://www.degruyter.com/view/product/43450