de León Ledesma, J., & León González, C. J. (2016). Colombian tourism. In Jafar Jafari, Honggen Xiao (Eds.), Encyclopedia of Tourism. Editorial Springer. ISBN: 978-3-319-01383-1 (Print) 978-3-319-01384-8 (Online)
de León Ledesma, J., & León González, C. J. (2016). Colombian tourism. In Jafar Jafari, Honggen Xiao (Eds.), Encyclopedia of Tourism. Editorial Springer. ISBN: 978-3-319-01383-1 (Print) 978-3-319-01384-8 (Online)