Cita APA (7a ed.)

Heilig, R., & Holm, K. (1993). Signal Bischofferode. SPOTLESS-Verl..

Cita Chicago Style (17a ed.)

Heilig, René, y Knut Holm. Signal Bischofferode. Berlin: SPOTLESS-Verl., 1993.

Cita MLA (8a ed.)

Heilig, René, y Knut Holm. Signal Bischofferode. SPOTLESS-Verl., 1993.