MLA

Norman, Robert A.; Paul, Sharad P, and Sharad P Paul. The Last Natural Man. Springer International Publishing, 2017.

APA

Norman, S. P, & Paul, S. P. (2017). The Last Natural Man. Springer International Publishing.

Chicago

Norman, Robert A.; Paul, Sharad P., and Sharad P Paul. The Last Natural Man. : Springer International Publishing, 2017.