Guerra–Martínez, P., F. Cedeño–Ureña, and R. Quiel–Batista. “TYPIFICATION AND CHARACTERIZATION OF SMALL AND MEDIUM LIVESTOCK FARMS FROM THE DISTRICT OF GUALACA, CHIRIQUÍ - PANAMA”. Ciencia Agropecuaria, no. 25, Nov. 2016, pp. 22–44, http://200.46.165.126/index.php/ciencia-agropecuaria/article/view/91.