APA استشهاد

Gray, J. S. (1954). Psychology applied to human affair/2e. Mc Graw hill.

استشهاد بنمط شيكاغو

Gray, J. Stanley. Psychology Applied to Human Affair/2e. New York: Mc Graw hill, 1954.

MLA استشهاد

Gray, J. Stanley. Psychology Applied to Human Affair/2e. Mc Graw hill, 1954.