(1969). Reading book, laboratories in human relations training (Rev. ed.). National Education Association.
Chicago-Zitierstil (17. Ausg.)Reading Book, Laboratories in Human Relations Training. Rev. ed. Washington, D.C: National Education Association, 1969.
MLA-Zitierstil (9. Ausg.)Reading Book, Laboratories in Human Relations Training. Rev. ed. National Education Association, 1969.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.