Powers, E., & Witmer, H. (1951). An experiment in the prevention of delinquency: The Cambridge-Somerville Youth Study. Columbia University Press.
Chicagoスタイル(17版)引用形式Powers, Edwin, , Helen Witmer. An Experiment in the Prevention of Delinquency: The Cambridge-Somerville Youth Study. New York: Columbia University Press, 1951.
MLA(9版)引用形式Powers, Edwin, , Helen Witmer. An Experiment in the Prevention of Delinquency: The Cambridge-Somerville Youth Study. Columbia University Press, 1951.
警告: この引用は必ずしも正確ではありません.