(1999). National integrated research, development and extension agenda for vegetables, 1999-2004. s.n.
Chicago-referens (17:e uppl.)National Integrated Research, Development and Extension Agenda for Vegetables, 1999-2004. [S.l: s.n, 1999.
MLA-referens (9:e uppl.)National Integrated Research, Development and Extension Agenda for Vegetables, 1999-2004. s.n, 1999.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.