APA (7th ed.) Zitazioa
Fritzen, E. Sigmund Freud's Introductory Lectures: A Critical Commentary. Monarch.
Chicago Style (17th ed.) Zitazioa
Fritzen, Edward. Sigmund Freud's Introductory Lectures: A Critical Commentary. Nueva York, EUA: Monarch.
MLA (9th ed.) Zitazioa
Fritzen, Edward. Sigmund Freud's Introductory Lectures: A Critical Commentary. Monarch.
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