Dyfyniad APA

Christian J M. G. Pieri. (1992). Fertility of soils: A future for farming in the West African Savannah (With 87 figures). Heidelberg, Berlin: Springer-Verlag.

Dyfyniad Arddull Chicago

Christian J M. G. Pieri. Fertility of Soils: A Future for Farming in the West African Savannah (With 87 Figures). Heidelberg, Berlin: Springer-Verlag, 1992.

Dyfyniad MLA

Christian J M. G. Pieri. Fertility of Soils: A Future for Farming in the West African Savannah (With 87 Figures). Heidelberg, Berlin: Springer-Verlag, 1992.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.