Não informado. (1990). Danish Dairy and Food Industry Worldwide. Danish Dairy Engineers Association.
Chicago-Zitierstil (17. Ausg.)Não informado. Danish Dairy and Food Industry Worldwide. Odense, Dinamarca: Danish Dairy Engineers Association, 1990.
MLA-Zitierstil (8. Ausg.)Não informado. Danish Dairy and Food Industry Worldwide. Danish Dairy Engineers Association, 1990.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.