@book{56823,
	author = {Gale Research Company. and Ruffner, Frederick G.},
	title = {Encyclopedia of associations.},
	year = {[1967-68, c1968]},
	address = {Detroit},
	edition = {5th ed.},
	note = {First ed. published in 1956 under title: Enciclopedia of America associations.}
}