Weddell, B. J. (2002). Conserving living natural resources: In the context of a changing world. Cambridge, U.K.,New York, NY: Cambridge University Press.
استشهاد بنمط شيكاغوWeddell, Bertie J. Conserving Living Natural Resources: In the Context of a Changing World. Cambridge, U.K.,New York, NY: Cambridge University Press, 2002.
MLA استشهادWeddell, Bertie J. Conserving Living Natural Resources: In the Context of a Changing World. Cambridge, U.K.,New York, NY: Cambridge University Press, 2002.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.