Não informado. (1949). Economic report. Edinburgh and East of Scotland College of Agriculture.
Chicago (17e ed.) BronvermeldingNão informado. Economic Report. Edinburgh, Inglaterra: Edinburgh and East of Scotland College of Agriculture, 1949.
MLA (8e ed.) BronvermeldingNão informado. Economic Report. Edinburgh and East of Scotland College of Agriculture, 1949.
Let op: Deze citaties zijn niet altijd 100% accuraat.