(1960). Administration in Extension. Madison: National Agricultural Extension Center for Advanced Study, University of Wisconsin.
Παραπομπή Chicago StyleAdministration in Extension. Madison: National Agricultural Extension Center for Advanced Study, University of Wisconsin, 1960.
Παραπομπή MLAAdministration in Extension. Madison: National Agricultural Extension Center for Advanced Study, University of Wisconsin, 1960.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.