APA-Zitierstil (7. Ausg.)

(1989). Variability in grain yields: Implications for agricultural research and policy in developing countries. Johns Hopkins Univ. Press.

Chicago-Zitierstil (17. Ausg.)

Variability in Grain Yields: Implications for Agricultural Research and Policy in Developing Countries. Baltimore u.a: Johns Hopkins Univ. Press, 1989.

MLA-Zitierstil (9. Ausg.)

Variability in Grain Yields: Implications for Agricultural Research and Policy in Developing Countries. Johns Hopkins Univ. Press, 1989.