Cita APA

Preston, C. J., & Ouderkirk, W. (2007). Nature, Value, Duty: Life on Earth with Holmes Rolston, III. Springer.

Citación estilo Chicago

Preston, Christopher J., and Wayne Ouderkirk. Nature, Value, Duty: Life On Earth With Holmes Rolston, III. Dordrecht: Springer, 2007.

Cita MLA

Preston, Christopher J., and Wayne Ouderkirk. Nature, Value, Duty: Life On Earth With Holmes Rolston, III. Dordrecht: Springer, 2007.