Tornos, A. d. (1922). The combined spanish method. D. Appleton-Century Company.
Cita Chicago Style (17a ed.)Tornos, Alberto de. The Combined Spanish Method. New York, Estados Unidos: D. Appleton-Century Company, 1922.
Cita MLA (9a ed.)Tornos, Alberto de. The Combined Spanish Method. D. Appleton-Century Company, 1922.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.