Cita APA (7a ed.)

Spee-Verlag. (1977). Edition Spee. Spee.

Cita Chicago Style (17a ed.)

Spee-Verlag. Edition Spee. Trier: Spee, 1977.

Cita MLA (9a ed.)

Spee-Verlag. Edition Spee. Spee, 1977.