Knudsen, P., & Agricultural Council of Denmark. (1967). Agriculture in Denmark: A survey of structure and development. Land Books Ltd.
Citazione stile Chigago Style (17a edizione)Knudsen, P.H, e Agricultural Council of Denmark. Agriculture in Denmark: A Survey of Structure and Development. London: Land Books Ltd, 1967.
Citatione MLA (9a ed.)Knudsen, P.H, e Agricultural Council of Denmark. Agriculture in Denmark: A Survey of Structure and Development. Land Books Ltd, 1967.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.