APA-čujuhus (7. p.)
ebrary, Inc, & Sisay Asefa. (2005). The economics of sustainable development. W.E. Upjohn Institute for Employment Research.
Chicago-čujuhus (17. p.)
ebrary, Inc, juo Sisay Asefa. The Economics of Sustainable Development. Kalamazoo, Mich.: W.E. Upjohn Institute for Employment Research, 2005.
MLA-čujuhus (9. p.)
ebrary, Inc, juo Sisay Asefa. The Economics of Sustainable Development. W.E. Upjohn Institute for Employment Research, 2005.
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