Waddell, C. W. (1918). An introduction to child psychology. Houghton-Mifflin Company.
Chicago Style (17. basım) AtıfWaddell, Charles W. An Introduction to Child Psychology. Boston, New York [etc.]: Houghton-Mifflin Company, 1918.
MLA (8th ed.) AtıfWaddell, Charles W. An Introduction to Child Psychology. Houghton-Mifflin Company, 1918.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..