Cita APA

Leith, M. (2000). Instinct and survival: An exchange of letters between Einstein and Freud.

Chicago Style Citation

Leith, Mark. Instinct and Survival: An Exchange of Letters between Einstein and Freud. 2000.

Cita MLA

Leith, Mark. Instinct and Survival: An Exchange of Letters between Einstein and Freud. 2000.

Atenció: Aquestes cites poden no estar 100% correctes.