APA (7 वां संस्करण) प्रशस्ति पत्र

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

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

McConnell, Robert L., और Daniel C. Abel. Environmental Geology Today. Burlington, MA: Jones & Bartlett Learning, 2015.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

McConnell, Robert L., और Daniel C. Abel. Environmental Geology Today. Jones & Bartlett Learning, 2015.