Cita APA (7a ed.)

Tornos, A. d. A key to the exercises in the combined spanish method, a new practical and theoretical system of learning the castellan language.

Cita Chicago Style (17a ed.)

Tornos, Alberto de. A Key to the Exercises in the Combined Spanish Method, a New Practical and Theoretical System of Learning the Castellan Language. New York.

Cita MLA (8a ed.)

Tornos, Alberto de. A Key to the Exercises in the Combined Spanish Method, a New Practical and Theoretical System of Learning the Castellan Language.