Παραπομπή σε μορφή APA (7η εκδ.)

Siegel, P., & Alwang, J. R. (2004). Export commodity production and broad-based rural development: Coffee and cocoa in the Dominican Republic. World Bank.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Siegel, Paul, και Jeffrey R. Alwang. Export Commodity Production and Broad-based Rural Development: Coffee and Cocoa in the Dominican Republic. [Washington, D.C: World Bank, 2004.

Παραπομπή σε μορφή MLA (9th εκδ.)

Siegel, Paul, και Jeffrey R. Alwang. Export Commodity Production and Broad-based Rural Development: Coffee and Cocoa in the Dominican Republic. World Bank, 2004.