APA (7th ed.) Citation

Peñate, J., & Escarpanter, J. (2010). Gramática simple. [Firmas Press].

Chicago Style (17th ed.) Citation

Peñate, Juan, and José Escarpanter. Gramática Simple. [Miami, FL]: [Firmas Press], 2010.

MLA (9th ed.) Citation

Peñate, Juan, and José Escarpanter. Gramática Simple. [Firmas Press], 2010.