Thomas, M. D. (2001). ¡De viva voz!: Intermediate conversation and grammar review. McGraw-Hill.
Cita Chicago (17th ed.)Thomas, Michael D. ¡De Viva Voz!: Intermediate Conversation and Grammar Review. Boston, MA: McGraw-Hill, 2001.
Cita MLA (9th ed.)Thomas, Michael D. ¡De Viva Voz!: Intermediate Conversation and Grammar Review. McGraw-Hill, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.