Não informado. (1950). Home and Garden Bulletin. U.S. Department of Agriculture.
Chicago (17e ed.) BronvermeldingNão informado. Home and Garden Bulletin. Washington: U.S. Department of Agriculture, 1950.
MLA (8e ed.) BronvermeldingNão informado. Home and Garden Bulletin. U.S. Department of Agriculture, 1950.
Let op: Deze citaties zijn niet altijd 100% accuraat.