APA aipamena

Penny, E. M. (1932). The co-operative movement and the consumer. York: National Guild of Co-operators (NGC).

Chicago Style aipamena

Penny, Edna M. The Co-operative Movement and the Consumer. York: National Guild of Co-operators (NGC), 1932.

MLA aipamena

Penny, Edna M. The Co-operative Movement and the Consumer. York: National Guild of Co-operators (NGC), 1932.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.