APA (7th ed.) Citation

Duque Romero, M. I., Barrera Wey, P., & Martínez, M. (2009). New generation 8: For teenagers. Norma.

Chicago Style (17th ed.) Citation

Duque Romero, María Isabel, Pilar Barrera Wey, and Miguel Martínez. New Generation 8: For Teenagers. Bogotá: Norma, 2009.

MLA (9th ed.) Citation

Duque Romero, María Isabel, et al. New Generation 8: For Teenagers. Norma, 2009.