APA Style

SFEIR-YOUNIS, A., DRAGUN, A, K. (1993). Land and Soil Management: technology, economics, and institutions (1). San Francisco: Westview.

MLA Style

SFEIR-YOUNIS, ALFREDO., DRAGUN, ANDREW, K.. "Land and Soil Management: technology, economics, and institutions". 1 San Francisco: Westview, 1993. Text.