International Annual Fertilizer Sham El-Sheikh, Egypt, & Arab Fertilizer Association. (2007). 13th AFA International Annual Fertilizer Forum: 6 - 8 February, 2007 : Sharm El-Sheikh, Egypt : Papers. Arab Fertilizer Association.
Chicago-referens (17:e uppl.)International Annual Fertilizer Sham El-Sheikh, Egypt, och Arab Fertilizer Association. 13th AFA International Annual Fertilizer Forum: 6 - 8 February, 2007 : Sharm El-Sheikh, Egypt : Papers. Sharm El-Sheikh, Egypt: Arab Fertilizer Association, 2007.
MLA-referens (9:e uppl.)International Annual Fertilizer Sham El-Sheikh, Egypt, och Arab Fertilizer Association. 13th AFA International Annual Fertilizer Forum: 6 - 8 February, 2007 : Sharm El-Sheikh, Egypt : Papers. Arab Fertilizer Association, 2007.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.