McConnell , R. L., & Abel , D. C. (2014). Environmental geology today. Jones & Bartlett Learning.
استشهاد بنمط شيكاغوMcConnell , Robert L., و Daniel C. Abel. Environmental Geology Today. Jones & Bartlett Learning, 2014.
MLA استشهادMcConnell , Robert L., و Daniel C. Abel. Environmental Geology Today. Jones & Bartlett Learning, 2014.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.