Lua APA (7ú heag.)

Não informado. (1951). FAO Fertilizer Yearbook. Food and Agriculture Organization of the United Nations.

Lua i Stíl Chicago (17ú heag.)

Não informado. FAO Fertilizer Yearbook. Rome: Food and Agriculture Organization of the United Nations, 1951.

Lua MLA (8ú heag.)

Não informado. FAO Fertilizer Yearbook. Food and Agriculture Organization of the United Nations, 1951.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.