Myers, George S. (1949). "Usage of Anadromous, Catadromous and allied terms for migratory fishes". Copeia. 1949 (2): 89–97. doi:10.2307/1438482. JSTOR1438482.
Quinlan, T.; Morris, C. D. (1994). "Implications of changes to the transhumance system for conservation of the mountain catchments in eastern Lesotho". African Journal of Range & Forage Science. 11 (3): 76–81. doi:10.1080/10220119.1994.9647851. ISSN1022-0119.
Myers, George S. (1949). "Usage of Anadromous, Catadromous and allied terms for migratory fishes". Copeia. 1949 (2): 89–97. doi:10.2307/1438482. JSTOR1438482.
Animal migration : a synthesis. Milner-Gulland, E. J.,, Fryxell, John M., 1954-, Sinclair, A. R. E. (Anthony Ronald Entrican). Oxford. 20 January 2011. ISBN9780191576621. OCLC795706827.{{cite book}}: CS1 maint: location missing publisher (link) CS1 maint: others (link)
Quinlan, T.; Morris, C. D. (1994). "Implications of changes to the transhumance system for conservation of the mountain catchments in eastern Lesotho". African Journal of Range & Forage Science. 11 (3): 76–81. doi:10.1080/10220119.1994.9647851. ISSN1022-0119.