Não informado. (1954). Agricultural Engineers Yearbook. American Society of Agricultural Engineers.
Chicago (17e ed.) BronvermeldingNão informado. Agricultural Engineers Yearbook. St. Joseph, Mich: American Society of Agricultural Engineers, 1954.
MLA (8e ed.) BronvermeldingNão informado. Agricultural Engineers Yearbook. American Society of Agricultural Engineers, 1954.
Let op: Deze citaties zijn niet altijd 100% accuraat.