APA (7th ed.) Citation

Davidson, P. O., & Costello, C. G. (1969). N=1: experimental studies of single cases: An enduring problem in psychology. Van Nostrand Reinhold Co..

Chicago Style (17th ed.) Citation

Davidson, Park Olof, and Charles G. Costello. N=1: Experimental Studies of Single Cases: An Enduring Problem in Psychology. New York: Van Nostrand Reinhold Co., 1969.

MLA (9th ed.) Citation

Davidson, Park Olof, and Charles G. Costello. N=1: Experimental Studies of Single Cases: An Enduring Problem in Psychology. Van Nostrand Reinhold Co., 1969.