Ruiz, G. R. (2016). Secondary Education in Five South American Countries. Web
Citación estilo ChicagoRuiz, Guillermo Ramón. Secondary Education in Five South American Countries. 2016.
Cita MLARuiz, Guillermo Ramón. Secondary Education in Five South American Countries. 2016.
Precaución: Estas citas no son 100% exactas.