Não informado. (1955). Texas agricultural progress. Texas Agricultural Experiment Station.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Texas Agricultural Progress. College Station, Tex: Texas Agricultural Experiment Station, 1955.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Texas Agricultural Progress. Texas Agricultural Experiment Station, 1955.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.