Gray, J. S. (1954). Psychology applied to human affair/2e. Mc Graw hill.
Chicago Style aipamenaGray, J. Stanley. Psychology Applied to Human Affair/2e. New York: Mc Graw hill, 1954.
MLA aipamenaGray, J. Stanley. Psychology Applied to Human Affair/2e. Mc Graw hill, 1954.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.