Cita APA (7a ed.)

Denzel, F., Ott, P., Reidel, M., & Rüdiger, D. (1969). Hopsi-Fibel. Verlag Sellier OHG Freising, vormals Dr. F.P. Datterer & Cie.

Cita Chicago Style (17a ed.)

Denzel, Ferdinand, Pepperl Ott, Marlene Reidel, y Dietrich Rüdiger. Hopsi-Fibel. Freising: Verlag Sellier OHG Freising, vormals Dr. F.P. Datterer & Cie, 1969.

Cita MLA (9a ed.)

Denzel, Ferdinand, et al. Hopsi-Fibel. Verlag Sellier OHG Freising, vormals Dr. F.P. Datterer & Cie, 1969.