Soper, E. (1993). Philosophy of biology. Univ Pr..
Cita Chicago (17th ed.)Soper, Elliott. Philosophy of Biology. Oxford: Univ Pr., 1993.
Cita MLA (9th ed.)Soper, Elliott. Philosophy of Biology. Univ Pr., 1993.
Atenció: Aquestes cites poden no estar 100% correctes.