Dyfyniad APA

Nash, H., & Mc Call, G. J. H. (1996). Ground water quality. Chapman & Hall.

Dyfyniad Arddull Chicago

Nash, H., and G. J. H. Mc Call. Ground Water Quality. London: Chapman & Hall, 1996.

Dyfyniad MLA

Nash, H., and G. J. H. Mc Call. Ground Water Quality. Chapman & Hall, 1996.

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