Rocha, A., Mendes, R. de A. and Barbosa, C.S. (2008) “Strongyloides spp and other parasites found on lettuce (Lactuca sativa) commercially available in the city of Recife, Brazil”, Revista de Patologia Tropical / Journal of Tropical Pathology, 37(2), pp. 151–160. doi:10.5216/rpt.v37i2.5046.