APA

Ayd J. J., . (1948). An introductory manual in psychology. New York: Fordham University Press.

Chicago

Ayd Joseph J, . 1948. An introductory manual in psychology. New York: Fordham University Press.

Harvard

Ayd J. J., . (1948). An introductory manual in psychology. New York: Fordham University Press.

MLA

Ayd Joseph J, . An introductory manual in psychology. New York: Fordham University Press. 1948.