FAO. (1971). Annual fertilizer review N.71. Rome: FAO.
Trích dẫn kiểu ChicagoFAO. Annual Fertilizer Review N.71. Rome: FAO, 1971.
Deismireacht MLAFAO. Annual Fertilizer Review N.71. Rome: FAO, 1971.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.