Puicón, V. et al. 2018. Prevalence of gastrointestinal nematodes in alpacas and sheep from two communal cooperatives in the Pasco region, Peru. Revista de Investigaciones Veterinarias del Perú. 29, 4 (Nov. 2018), 1440–1448. DOI:https://doi.org/10.15381/rivep.v29i4.15189.