Dyfyniad APA

Schiller, F. C. S. (1968). Riddles of the sphinx: A study in the philosophy of humanism. Greenwood Press.

Dyfyniad Arddull Chicago

Schiller, F. C. S. Riddles of the Sphinx: A Study in the Philosophy of Humanism. New York: Greenwood Press, 1968.

Dyfyniad MLA

Schiller, F. C. S. Riddles of the Sphinx: A Study in the Philosophy of Humanism. Greenwood Press, 1968.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.