MLA

Espinosa, José, et al. The Soils of Ecuador. Springer International Publishing, 2018.

APA

Espinosa, J., Bernal, G., Moreno, J., & Prat, C. (2018). The Soils of Ecuador. Springer International Publishing.

Chicago

Espinosa, José, Gustavo Bernal, Julio Moreno, and Christian Prat. The Soils of Ecuador. : Springer International Publishing, 2018.