Freud,Sigmund, & Richards,Angela. (1970). On sexuality: Three essays on the theory of sexuality and other works. Penguin.
Chicago-viite (17. p.)Freud,Sigmund, ja Richards,Angela. On Sexuality: Three Essays on the Theory of Sexuality and Other Works. Harmondsworth,: Penguin, 1970.
MLA-viite (8. p.)Freud,Sigmund, ja Richards,Angela. On Sexuality: Three Essays on the Theory of Sexuality and Other Works. Penguin, 1970.
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