Purcell, S. (2012). Commercially important sea cucumbers of the world. Food and Agriculture Organizaiton of the United Nations.
Chicago-viite (17. p.)Purcell, Steven. Commercially Important Sea Cucumbers of the World. Rome: Food and Agriculture Organizaiton of the United Nations, 2012.
MLA-viite (9. p.)Purcell, Steven. Commercially Important Sea Cucumbers of the World. Food and Agriculture Organizaiton of the United Nations, 2012.
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