Cita APA (7a ed.)
Purdy, J. (1984). Eustace Chisholm and the works. GMP.
Cita Chicago Style (17a ed.)
Purdy, James. Eustace Chisholm and the Works. London: GMP, 1984.
Cita MLA (9a ed.)
Purdy, James. Eustace Chisholm and the Works. GMP, 1984.
Precaución: Estas citas no son 100% exactas.