Philippine Council for Agriculture and Resources Research and Development. (2001). The Philippines recommends for conservation farming in the sloping lands. PCARRD-DOST.
Lua i Stíl Chicago (17ú heag.)Philippine Council for Agriculture and Resources Research and Development. The Philippines Recommends for Conservation Farming in the Sloping Lands. Los Banos, Laguna: PCARRD-DOST, 2001.
Lua MLA (9ú heag.)Philippine Council for Agriculture and Resources Research and Development. The Philippines Recommends for Conservation Farming in the Sloping Lands. PCARRD-DOST, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.