Cita APA (7th ed.)

Evenson, R. Cycles in research productivity and international diffusion in sugarcane, wheat and rice. s.n.

Cita Chicago (17th ed.)

Evenson, Robert. Cycles in Research Productivity and International Diffusion in Sugarcane, Wheat and Rice. [S.l: s.n.

Cita MLA (9th ed.)

Evenson, Robert. Cycles in Research Productivity and International Diffusion in Sugarcane, Wheat and Rice. s.n.