APA (7th ed.) Citation

Freud, S. (1947). Leonardo da Vinci: A study in psychosexuality. Vintage.

Chicago Style (17th ed.) Citation

Freud, Sigmund. Leonardo Da Vinci: A Study in Psychosexuality. New York: Vintage, 1947.

MLA (9th ed.) Citation

Freud, Sigmund. Leonardo Da Vinci: A Study in Psychosexuality. Vintage, 1947.