Παραπομπή APA

NATHAN BUPP. (2012). Meaning and value in a secular age: The writings of paul kurtz. Proment house Books.

Παραπομπή Chicago Style

NATHAN BUPP. Meaning and Value in a Secular Age: The Writings of Paul Kurtz. New York: Proment house Books, 2012.

Παραπομπή MLA

NATHAN BUPP. Meaning and Value in a Secular Age: The Writings of Paul Kurtz. Proment house Books, 2012.