Dyfyniad APA
Hannan, M. T., & Freeman, J. (1989). Organizational ecology. Harvard University Press.
Dyfyniad Arddull Chicago
Hannan, Michael T., and John Freeman. Organizational Ecology. Cambridge, MA: Harvard University Press, 1989.
Dyfyniad MLA
Hannan, Michael T., and John Freeman. Organizational Ecology. Harvard University Press, 1989.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.