Cita APA (7a ed.)
Ballard, E. G. (1971). Philosophy at the crossroads. Louisiana State University Press.
Cita Chicago Style (17a ed.)
Ballard, Edward G. Philosophy at the Crossroads. Baton Rouge: Louisiana State University Press, 1971.
Cita MLA (9a ed.)
Ballard, Edward G. Philosophy at the Crossroads. Louisiana State University Press, 1971.
Precaución: Estas citas no son 100% exactas.