Johnson, S. (1965) «Observations on the systematic position of the genus <i>Gaigeria</i> Railliet & Henry, 1910 (subfamily Necatorinae Lane, 1907: family Ancylostomidae Lane, 1907: Nematoda)», Revista de Biología Tropical, 13(2), pp. 213–217. doi: 10.15517/rev.biol.trop.1965.28636.