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Darrin M. Population density of northern spotted owls in managed young-growth forests in coastal northern California (PDF). Journal of Raptor Research
（原始内容存档于2019-06-10）. Stuart, Gordon W. & Edwards, Pamela J. Concepts about forests and water. Northern Journal of Applied Forestry. 2006, 23 (1) [2017-01-30]. （原始内容存档于2017-07-01）
River of love in an age of pollution:the Yamuna River of northern India, University of California Press. Pp. 277, 2006, ISBN 0-520-24790-6 , page 160, Gardner
Alverson, William S.; Waller, Donald M.; Solheim, Stephen L. Forests Too Deer: Edge Effects in Northern Wisconsin. Conservation Biology. 1988, 2 (4): 348–358
[2011-06-28]. （原始内容存档于2011-06-28）. World Wildlife Fund. Madagascar subhumid forests. WildWorld Ecoregion Profile. National Geographic Society. 2001 [2011-07-28]