Hancock, L. E., & Mitchell, C. R. (2007). Zones of peace. Kumarian Press.
Chicago Style aipamenaHancock, Landon E., and C. R. Mitchell. Zones of Peace. Bloomfield, CT: Kumarian Press, 2007.
MLA aipamenaHancock, Landon E., and C. R. Mitchell. Zones of Peace. Kumarian Press, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.