APA (7th ed.) Citation

Otto, E., & Ruppert, E. (1967). Gramatica sucinta de la lengua alemana (21a ed.). Herder.

Chicago Style (17th ed.) Citation

Otto, E., and E. Ruppert. Gramatica Sucinta De La Lengua Alemana. 21a ed. Barcelona: Herder, 1967.

MLA (9th ed.) Citation

Otto, E., and E. Ruppert. Gramatica Sucinta De La Lengua Alemana. 21a ed. Herder, 1967.

Warning: These citations may not always be 100% accurate.