Porter, D. R., & Salvesen, D. (1995). Collaborative planning for wetlands and wildlife: Issues and examples. Washington, DC: Island Press.
Чикагска система за цитиранеPorter, Douglas R., и David Salvesen. Collaborative Planning for Wetlands and Wildlife: Issues and Examples. Washington, DC: Island Press, 1995.
MLA формат за цитиранеPorter, Douglas R., и David Salvesen. Collaborative Planning for Wetlands and Wildlife: Issues and Examples. Washington, DC: Island Press, 1995.
Внимание: Тези цитати може да не са 100% точни.