Cita APA (7th ed.)

Amjadi, A., Reincke, U., & Yeats, A. J. (1996). Did external barriers cause the marginalization of Sub-Saharan Africa in world trade? World Bank, International Economics Dept.

Cita Chicago (17th ed.)

Amjadi, Azita, Ulrich Reincke, i Alexander J. Yeats. Did External Barriers Cause the Marginalization of Sub-Saharan Africa in World Trade? Washington, D.C: World Bank, International Economics Dept, 1996.

Cita MLA (9th ed.)

Amjadi, Azita, et al. Did External Barriers Cause the Marginalization of Sub-Saharan Africa in World Trade? World Bank, International Economics Dept, 1996.