Thomas A Jefferson. (1993). FAO species identification guide: Marine mammals of the world. Rome: FAO.
Trích dẫn kiểu ChicagoThomas A Jefferson. FAO Species Identification Guide: Marine Mammals of the World. Rome: FAO, 1993.
Deismireacht MLAThomas A Jefferson. FAO Species Identification Guide: Marine Mammals of the World. Rome: FAO, 1993.
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