Rapsomanikis, George (2015). „The economic lives of smallholder farmers”(PDF). Food and Agriculture Organization of the United Nations. стр. 9. Архивирано(PDF) из оригинала 4. 5. 2016. г. Приступљено 11. 1. 2018. „About two-thirds of the developing world’s 3 billion rural people live in about 475 million small farm households, working on land plots smaller than 2 hectares.”
Rapsomanikis, George (2015). „The economic lives of smallholder farmers”(PDF). Food and Agriculture Organization of the United Nations. стр. 9. Архивирано(PDF) из оригинала 4. 5. 2016. г. Приступљено 11. 1. 2018. „About two-thirds of the developing world’s 3 billion rural people live in about 475 million small farm households, working on land plots smaller than 2 hectares.”
Waters, Tony (2008). The persistence of subsistence agriculture : life beneath the level of the marketplace. Lexington Books. ISBN978-0-7391-5876-0. OCLC839303290.