Penny, E. M. (1932). The co-operative movement and the consumer. York: National Guild of Co-operators (NGC).
Chicago-Zitierstil (17. Ausg.)Penny, Edna M. The Co-operative Movement and the Consumer. York: National Guild of Co-operators (NGC), 1932.
MLA-Zitierstil (8. Ausg.)Penny, Edna M. The Co-operative Movement and the Consumer. York: National Guild of Co-operators (NGC), 1932.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.