Não informado. (1984). Asae Standards. American Society of Agricultural Engineers.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Asae Standards. St. Joseph, Mich: American Society of Agricultural Engineers, 1984.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Asae Standards. American Society of Agricultural Engineers, 1984.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.