Philippine Council for Agriculture and Resources Research and Development. (1986). State of the art: Sweet potato research. Philippine Root Crops Information Service, Visayas State College of Agriculture.
Lua i Stíl Chicago (17ú heag.)Philippine Council for Agriculture and Resources Research and Development. State of the Art: Sweet Potato Research. [Baybay, Leyte]: Philippine Root Crops Information Service, Visayas State College of Agriculture, 1986.
Lua MLA (9ú heag.)Philippine Council for Agriculture and Resources Research and Development. State of the Art: Sweet Potato Research. Philippine Root Crops Information Service, Visayas State College of Agriculture, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.