Cita APA (7a ed.)

Heilmeyer, W., & Schmidt, H. (1991). Berliner Forum.

Cita Chicago Style (17a ed.)

Heilmeyer, Wolf-Dieter, y Hartwig Schmidt. Berliner Forum. Berlin, 1991.

Cita MLA (8a ed.)

Heilmeyer, Wolf-Dieter, y Hartwig Schmidt. Berliner Forum. 1991.