Cita APA (7a ed.)

Freud, S., Freud, A., Strachey, J., & Tyson, A. (2001). Two case histories: 'Little Hans' and the 'Rat Man': (1909). Vintage.

Cita Chicago Style (17a ed.)

Freud, Sigmund, Anna Freud, James Strachey, y Alan Tyson. Two Case Histories: 'Little Hans' and the 'Rat Man': (1909). London: Vintage, 2001.

Cita MLA (8a ed.)

Freud, Sigmund, et al. Two Case Histories: 'Little Hans' and the 'Rat Man': (1909). Vintage, 2001.