Cita APA (7a ed.)

Trigg, R. (1999). Ideas of human nature: An historical introduction (2nd ed.). Blackwell Publishers.

Cita Chicago Style (17a ed.)

Trigg, Roger. Ideas of Human Nature: An Historical Introduction. 2nd ed. Oxford ; Malden, Mass.: Blackwell Publishers, 1999.

Cita MLA (9a ed.)

Trigg, Roger. Ideas of Human Nature: An Historical Introduction. 2nd ed. Blackwell Publishers, 1999.