Popkin, R. H., & Stroll, A. (1956). Philosophie made simple. Doubleday & Company.
Chicagoスタイル(17版)引用形式Popkin, Richard H., , Avrum Stroll. Philosophie Made Simple. Garden City [u.a.]: Doubleday & Company, 1956.
MLA(8版)引用形式Popkin, Richard H., , Avrum Stroll. Philosophie Made Simple. Doubleday & Company, 1956.
警告: この引用は必ずしも正確ではありません.