Cita APA (7a ed.)

ebrary, Inc, & De Groot, J. (2004). Nature in American philosophy. Catholic University of America Press.

Cita Chicago Style (17a ed.)

ebrary, Inc, y Jean De Groot. Nature in American Philosophy. Washington, D.C.: Catholic University of America Press, 2004.

Cita MLA (9a ed.)

ebrary, Inc, y Jean De Groot. Nature in American Philosophy. Catholic University of America Press, 2004.