International Conference of Agricultural Economists & International Association of Agricultural Economists. (1956). Proceedings of the ninth International Conference of Agricultural Economists. oxford university press.
Chicago-referens (17:e uppl.)International Conference of Agricultural Economists och International Association of Agricultural Economists. Proceedings of the Ninth International Conference of Agricultural Economists. new York: oxford university press, 1956.
MLA-referens (9:e uppl.)International Conference of Agricultural Economists och International Association of Agricultural Economists. Proceedings of the Ninth International Conference of Agricultural Economists. oxford university press, 1956.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.