Turk, A., Turk, J., & Wittes, J. T. (1972). Ecology, pollution, environment. W.B Saunders.
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Dyfyniad Arddull Chicago
Turk, Amos, Jonathan Turk, and Janet T. Wittes. Ecology, Pollution, Environment. London: W.B Saunders, 1972.
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Dyfyniad MLA
Turk, Amos, et al. Ecology, Pollution, Environment. W.B Saunders, 1972.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.