APA (7e ed.) Bronvermelding

Darkoh, M. B. (1989). Combating desertification in the Southern African region: An updated regional assessment. UNEP.

Chicago (17e ed.) Bronvermelding

Darkoh, Michael B.K. Combating Desertification in the Southern African Region: An Updated Regional Assessment. [S.l.]: UNEP, 1989.

MLA (9e ed.) Bronvermelding

Darkoh, Michael B.K. Combating Desertification in the Southern African Region: An Updated Regional Assessment. UNEP, 1989.