C C Webster. (1980). Agriculture in tropics. London: Longman.
Trích dẫn kiểu ChicagoC C Webster. Agriculture in Tropics. London: Longman, 1980.
Deismireacht MLAC C Webster. Agriculture in Tropics. London: Longman, 1980.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.