Schiller, F. C. S. (1968). Riddles of the sphinx: A study in the philosophy of humanism. Greenwood Press.
Chicagoスタイル(17版)引用形式Schiller, F. C. S. Riddles of the Sphinx: A Study in the Philosophy of Humanism. New York: Greenwood Press, 1968.
MLA(8版)引用形式Schiller, F. C. S. Riddles of the Sphinx: A Study in the Philosophy of Humanism. Greenwood Press, 1968.
警告: この引用は必ずしも正確ではありません.