Spradlin, W. W., & Porterfield, P. B. (1984). The search for certainty. Springer.
Chicago Style (17th ed.) CitationSpradlin, Wilford W., and Patricia B. Porterfield. The Search for Certainty. New York, NY [u.a.]: Springer, 1984.
MLA (8th ed.) CitationSpradlin, Wilford W., and Patricia B. Porterfield. The Search for Certainty. Springer, 1984.
Warning: These citations may not always be 100% accurate.