Παραπομπή σε μορφή APA (7η εκδ.)

Ahlcrona, E. (1988). The impact of climate and man on land transformation in central Sudan: Applications of remote sensing. Lund University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Ahlcrona, Eva. The Impact of Climate and Man on Land Transformation in Central Sudan: Applications of Remote Sensing. Lund, Sweden: Lund University Press, 1988.

Παραπομπή σε μορφή MLA (8th εκδ.)

Ahlcrona, Eva. The Impact of Climate and Man on Land Transformation in Central Sudan: Applications of Remote Sensing. Lund University Press, 1988.