Não informado. (1925). Proceedings of the International Seed Testing Association. International Seed Testing Association.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Proceedings of the International Seed Testing Association. Vollebekk, Noruega: International Seed Testing Association, 1925.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Proceedings of the International Seed Testing Association. International Seed Testing Association, 1925.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.