APA (7th ed.) Citation

Maslow, A. H. (1951). Principles of abnormal psychology: The dynamics of psychic illness (Rev ed.). Harper.

Chicago Style (17th ed.) Citation

Maslow, Abraham H. Principles of Abnormal Psychology: The Dynamics of Psychic Illness. Rev ed. New York: Harper, 1951.

MLA (9th ed.) Citation

Maslow, Abraham H. Principles of Abnormal Psychology: The Dynamics of Psychic Illness. Rev ed. Harper, 1951.