Ewald, W. R. ,. (1967). Environment for Man: The Next Fifty Years. Bloomington ; London: Indiana University Press.
استشهاد بنمط شيكاغوEwald, William R.. Environment for Man: The Next Fifty Years. Bloomington ; London: Indiana University Press, 1967.
MLA استشهادEwald, William R.. Environment for Man: The Next Fifty Years. Bloomington ; London: Indiana University Press, 1967.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.