Não informado. Oil Palm News. Tropical Products Institute, Oil Palm Advisory Bureau.
Citação do estilo Chicago (17ª ed.)Não informado. Oil Palm News. London: Tropical Products Institute, Oil Palm Advisory Bureau.
Citação MLA (8ª ed.)Não informado. Oil Palm News. Tropical Products Institute, Oil Palm Advisory Bureau.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.