Calkins, M. W. (1907). The persistent problems of philosophy: An introduction to metaphysics through the study of modern systems,. Macmillan Company; Macmillan and Company.
Chicago Style (17th ed.) CitationCalkins, Mary Whiton. The Persistent Problems of Philosophy: An Introduction to Metaphysics Through the Study of Modern Systems,. New York : London: Macmillan Company; Macmillan and Company, 1907.
MLA (9th ed.) CitationCalkins, Mary Whiton. The Persistent Problems of Philosophy: An Introduction to Metaphysics Through the Study of Modern Systems,. Macmillan Company; Macmillan and Company, 1907.
Warning: These citations may not always be 100% accurate.