Não informado. (2005). Memorandum. Department of Agricultural Research.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Memorandum. Lagos: Department of Agricultural Research, 2005.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Memorandum. Department of Agricultural Research, 2005.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.