APA (7th ed.) Citation

Ahn, P. M., & Irvine, F. R. (1970). West African agriculture (3rd ed.). O.U.P..

Chicago Style (17th ed.) Citation

Ahn, Peter Martin, and Frederick Robert Irvine. West African Agriculture. 3rd ed. O.U.P., 1970.

MLA (9th ed.) Citation

Ahn, Peter Martin, and Frederick Robert Irvine. West African Agriculture. 3rd ed. O.U.P., 1970.

Warning: These citations may not always be 100% accurate.