Citazione Stile APA (7a Edizione)
Araya, B., & Asafu-Adjaye, J. (1999). Returns to farm-level soil conservation on tropical steep slopes: <the> case of the eritrean highlands. The University of Queensland.
Citazione stile Chigago Style (17a edizione)
Araya, Bereket, e John Asafu-Adjaye. Returns to Farm-level Soil Conservation on Tropical Steep Slopes: <the> Case of the Eritrean Highlands. Brisbane: The University of Queensland, 1999.
Citatione MLA (9a ed.)
Araya, Bereket, e John Asafu-Adjaye. Returns to Farm-level Soil Conservation on Tropical Steep Slopes: <the> Case of the Eritrean Highlands. The University of Queensland, 1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.