Não informado. (2018). Research Summary. Ohio Agricultural Research and Development Center.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Research Summary. Wooster, Ohio: Ohio Agricultural Research and Development Center, 2018.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Research Summary. Ohio Agricultural Research and Development Center, 2018.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.