APA-viite (7. p.)
Vernooy, R. (2003). Seeds that give: Participatory plant breeding. International Development Research Centre.
Chicago-viite (17. p.)
Vernooy, Ronnie. Seeds That Give: Participatory Plant Breeding. Ottawa: International Development Research Centre, 2003.
MLA-viite (9. p.)
Vernooy, Ronnie. Seeds That Give: Participatory Plant Breeding. International Development Research Centre, 2003.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.