Não informado. (1925). Proceedings of the International Seed Testing Association. International Seed Testing Association.
Chicago-Zitierstil (17. Ausg.)Não informado. Proceedings of the International Seed Testing Association. Vollebekk, Noruega: International Seed Testing Association, 1925.
MLA-Zitierstil (8. Ausg.)Não informado. Proceedings of the International Seed Testing Association. International Seed Testing Association, 1925.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.