Cita APA (7th ed.)

Barker, R., & Quintana, E. Farm management studies of costs and returns in rice production. International Rice Research Institute.

Cita Chicago (17th ed.)

Barker, Randolf, i E.U Quintana. Farm Management Studies of Costs and Returns in Rice Production. [Los Baños, Laguna]: International Rice Research Institute.

Cita MLA (9th ed.)

Barker, Randolf, i E.U Quintana. Farm Management Studies of Costs and Returns in Rice Production. International Rice Research Institute.