APA (7th ed.) Citation

Ortiz de Villalba Urbieta, J. S. (1980). Volcán de arcilla. CICAME.

Chicago Style (17th ed.) Citation

Ortiz de Villalba Urbieta, Juan Santos. Volcán De Arcilla. Quito: CICAME, 1980.

MLA (9th ed.) Citation

Ortiz de Villalba Urbieta, Juan Santos. Volcán De Arcilla. CICAME, 1980.

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