Ewusie, J. Y. (1980). Elements of tropical ecology: With reference to the African, Asian, Pacific and New World tropics. Heinemann Educational Books Ltd.
Cita Chicago (17th ed.)Ewusie, J. Y. Elements of Tropical Ecology: With Reference to the African, Asian, Pacific and New World Tropics. 22 Bedford Square, London WC1B 3HH: Heinemann Educational Books Ltd, 1980.
Cita MLA (9th ed.)Ewusie, J. Y. Elements of Tropical Ecology: With Reference to the African, Asian, Pacific and New World Tropics. Heinemann Educational Books Ltd, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.