Cita APA

Spitzer, W. (1944). Obstetric Analgesia with Pethidine.

Chicago Style Citation

Spitzer, Walter. Obstetric Analgesia With Pethidine. 1944.

Cita MLA

Spitzer, Walter. Obstetric Analgesia With Pethidine. 1944.

Atenció: Aquestes cites poden no estar 100% correctes.