Παραπομπή σε μορφή APA (7η εκδ.)

Franzel, S. (1979). An interim evaluation of two agricultural production projects in Senegal: The economics of rainfed and irrigated agriculture. Dept. of Agricultural Economics, Michigan State University.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Franzel, Steven. An Interim Evaluation of Two Agricultural Production Projects in Senegal: The Economics of Rainfed and Irrigated Agriculture. East Lansing: Dept. of Agricultural Economics, Michigan State University, 1979.

Παραπομπή σε μορφή MLA (8th εκδ.)

Franzel, Steven. An Interim Evaluation of Two Agricultural Production Projects in Senegal: The Economics of Rainfed and Irrigated Agriculture. Dept. of Agricultural Economics, Michigan State University, 1979.