Filian Hurtado, Willian, Hugo Alvarado Álvarez, Jorge Pereda Mouso, Lino Curbelo Rodríguez, Roberto Vázquez Montes de Oca, y Redimio Pedraza Olivera. «Characterization of Cropping Systems Integrated With Cattle Raising in the Guayas River Basin, Los Rios Province, Ecuado»r. Revista de Producción Animal 31, no. 1 (junio 17, 2019). Accedido agosto 9, 2020. https://revistas.reduc.edu.cu/index.php/rpa/article/view/e2784.