Cita APA (7a ed.)

Thomas, U., & Twadell, F. (1977). Literatur. University of Wisconsin Pr.

Cita Chicago Style (17a ed.)

Thomas, Ursula, y Freeman Twadell. Literatur. Madison, Wis: University of Wisconsin Pr, 1977.

Cita MLA (9a ed.)

Thomas, Ursula, y Freeman Twadell. Literatur. University of Wisconsin Pr, 1977.