APA (7th ed.) Citation

Freud, S., & Freud, S. (2006). The Penguin Freud reader. Penguin Books.

Chicago Style (17th ed.) Citation

Freud, Sigmund, and Sigmund;Phillips Freud. The Penguin Freud Reader. Penguin Books, 2006.

MLA (9th ed.) Citation

Freud, Sigmund, and Sigmund;Phillips Freud. The Penguin Freud Reader. Penguin Books, 2006.

Warning: These citations may not always be 100% accurate.