APA (7th ed.) Citation

Portal Valenzuela, B. (1988). Ecuador. Iberoamericana.

Chicago Style (17th ed.) Citation

Portal Valenzuela, Bélfor. Ecuador. Madrid: Iberoamericana, 1988.

MLA (8th ed.) Citation

Portal Valenzuela, Bélfor. Ecuador. Iberoamericana, 1988.

Warning: These citations may not always be 100% accurate.