APA (7th ed.) Citation

Bremm, M. H., & Kühn, R. (1992). Rechentest RT 9+. Beltz.

Chicago Style (17th ed.) Citation

Bremm, Matthias Heinz, and Rolf Kühn. Rechentest RT 9+. Weinheim [u.a.]: Beltz, 1992.

MLA (9th ed.) Citation

Bremm, Matthias Heinz, and Rolf Kühn. Rechentest RT 9+. Beltz, 1992.