APA
Kirkpatrick E. A., . (1919). Fundamentals of child study. New York: Macmillan Publishing Company.
Chicago
Kirkpatrick Edwin A, . 1919. Fundamentals of child study. New York: Macmillan Publishing Company.
Harvard
Kirkpatrick E. A., . (1919). Fundamentals of child study. New York: Macmillan Publishing Company.
MLA
Kirkpatrick Edwin A, . Fundamentals of child study. New York: Macmillan Publishing Company. 1919.