Não informado. (1989). Agroforestry Today. International Centre for Research in Agroforestry.
Chicago-viite (17. p.)Não informado. Agroforestry Today. Nairobi: International Centre for Research in Agroforestry, 1989.
MLA-viite (8. p.)Não informado. Agroforestry Today. International Centre for Research in Agroforestry, 1989.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.