Map of the natural zones of the ocean
Tài liệu tham khảo
Bogorov, 1960, Geographic zones in the pelagic region of the central part of the Pacific, Trudy Inst. Okeanol.
Bogdanov, 1961, Zones of the seas and oceans, Priroda
Brodskii, 1959, The zonality of the temperate and high latitudes of the southern hemisphere, Priroda
Zenkevich, 1951