Παραπομπή APA

Mcconnell, R. L., & Abel , D. C. (2015). Environmental geology today. Jones & Bartlett.

Παραπομπή Chicago Style

Mcconnell, Robert L., και Daniel C. Abel. Environmental Geology Today. Burlington: Jones & Bartlett, 2015.

Παραπομπή MLA

Mcconnell, Robert L., και Daniel C. Abel. Environmental Geology Today. Jones & Bartlett, 2015.