Não informado. (1950). Agricultural and horticultural Engineering abstracts. National Institute of Agricultural Engineering.
Chicago-Zitierstil (17. Ausg.)Não informado. Agricultural and Horticultural Engineering Abstracts. Silsoe, Inglaterra: National Institute of Agricultural Engineering, 1950.
MLA-Zitierstil (8. Ausg.)Não informado. Agricultural and Horticultural Engineering Abstracts. National Institute of Agricultural Engineering, 1950.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.