APA
Power M. E., Tilman D., Estes J. A., Menge B. A., Bond W. J., Mills J. A., Daily G. C., Castilla J. C., Lubchenco J. & Paine R. T.Challenges in the quest for keystones. : .
Chicago
Power Mary E, Tilman David, Estes James A, Menge Bruce A, Bond William J, Mills Judy A, Daily Gretchen C, Castilla Juan Carlos, Lubchenco Jane and Paine Robert T.Challenges in the quest for keystones. : .
Harvard
Power M. E., Tilman D., Estes J. A., Menge B. A., Bond W. J., Mills J. A., Daily G. C., Castilla J. C., Lubchenco J. and Paine R. T.Challenges in the quest for keystones. : .
MLA
Power Mary E, Tilman David, Estes James A, Menge Bruce A, Bond William J, Mills Judy A, Daily Gretchen C, Castilla Juan Carlos, Lubchenco Jane and Paine Robert T.: . .