- Author: Autoridad Nacional del Servicio Civil SERVIR, Cynthia Sú Lay, Jenny Pilco, Fernando Cuadros, Tracy Prieto, Henry Dyer, Joel Betalleluz, Francisco Patiño, José Castañeda, Merybet Morales
- Language: Spanish
- Year: 2017
- Author: Thomas Henry Dyer
- Language: English
- Year: 2015
- Author: Thomas Henry Dyer.
- Language: English
- Year: 1901