COOKE, G. (1984). Fertilizing for maximum yield.-- Ed.3. Granada.
Lua i Stíl Chicago (17ú heag.)COOKE, G.W. Fertilizing for Maximum Yield.-- Ed.3. London: Granada, 1984.
Lua MLA (9ú heag.)COOKE, G.W. Fertilizing for Maximum Yield.-- Ed.3. Granada, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.