APA Style

Wang, Y., Hefley, W, E. (2016). The Global Impact of Unconventional Shale Gas Development . Springer Cham: Springer Cham.

MLA Style

Wang, Yongsheng., Hefley, William, E.. "The Global Impact of Unconventional Shale Gas Development". Springer Cham: Springer Cham, 2016. Text.