APA引文

Valdes,Alberto. (1979). Economics and the design of small-farmer technology. Lowa State University Press.

Chicago Edition Citation

Valdes,Alberto. Economics and the Design of Small-farmer Technology. IOWA: Lowa State University Press, 1979.

MLA引文

Valdes,Alberto. Economics and the Design of Small-farmer Technology. Lowa State University Press, 1979.

警告：這些引文格式不一定是100％准確.