Piplin, B. W., Pipkin, B., Trent, D., Hazlett, R., Bierman, P., & Pipkin, B. W. (2008). Geology and the environment (Fifth edition.). Thomson Brooks/Cole.
Chicago Style (17. basım) AtıfPiplin, Bernard W., Bernard Pipkin, D.D Trent, Richard Hazlett, Paul Bierman, ve Bernard W. Pipkin. Geology and the Environment. Fifth edition. Belmont, California: Thomson Brooks/Cole, 2008.
MLA (9th ed.) AtıfPiplin, Bernard W., et al. Geology and the Environment. Fifth edition. Thomson Brooks/Cole, 2008.
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