Não informado. (1891). Bulletin of the Washington Agricultural Experiment Station. Washington Agricultural Experiment Station.
Chicago (17e ed.) BronvermeldingNão informado. Bulletin of the Washington Agricultural Experiment Station. Pullman, Wash: Washington Agricultural Experiment Station, 1891.
MLA (8e ed.) BronvermeldingNão informado. Bulletin of the Washington Agricultural Experiment Station. Washington Agricultural Experiment Station, 1891.
Let op: Deze citaties zijn niet altijd 100% accuraat.