Canfield, J. V. (1966). Purpose in nature. Prentice-Hall.
Chicago Style (17th ed.) CitationCanfield, John V. Purpose in Nature. Englewood Cliffs, N.J: Prentice-Hall, 1966.
MLA (9th ed.) CitationCanfield, John V. Purpose in Nature. Prentice-Hall, 1966.
Warning: These citations may not always be 100% accurate.