WEBSTER, C. (1966). Agriculture in the tropics. The English Language Book Society and Longman.
Citazione stile Chigago Style (17a edizione)WEBSTER, C.C. Agriculture in the Tropics. London: The English Language Book Society and Longman, 1966.
Citatione MLA (9a ed.)WEBSTER, C.C. Agriculture in the Tropics. The English Language Book Society and Longman, 1966.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.