Citazione APA

Abel, D. C., & McConnell, R. L. (2015). Environmental Geology Today.

Stile di citazione Chicago

Abel, Daniel C., e Rober L. McConnell. Environmental Geology Today. London, Jones and Bartlett Publishers, 2015.

Citazione MLA

Abel, Daniel C., e Rober L. McConnell. Environmental Geology Today. 2015.