APA-viite (7. p.)
ebrary, Inc, Morris, M. L., Kelly, V. A., & Kopicki, R. J. (2006). Promoting increased fertilizer use in Africa: Lessons learned and good practice guidelines. World Bank Africa Region.
Chicago-viite (17. p.)
ebrary, Inc, Michael L. Morris, Valerie Auserehl Kelly, ja Ron J. Kopicki. Promoting Increased Fertilizer Use in Africa: Lessons Learned and Good Practice Guidelines. Washington, D.C.: World Bank Africa Region, 2006.
MLA-viite (9. p.)
ebrary, Inc, et al. Promoting Increased Fertilizer Use in Africa: Lessons Learned and Good Practice Guidelines. World Bank Africa Region, 2006.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.