Barker, R., & Quintana, E. Farm management studies of costs and returns in rice production. International Rice Research Institute.
Lua i Stíl Chicago (17ú heag.)Barker, Randolf, agus E.U Quintana. Farm Management Studies of Costs and Returns in Rice Production. [Los Baños, Laguna]: International Rice Research Institute.
Lua MLA (9ú heag.)Barker, Randolf, agus E.U Quintana. Farm Management Studies of Costs and Returns in Rice Production. International Rice Research Institute.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.