APA Style

Hefley, W, E., Wang, Y. (2018). The Global Impact of Unconventional Shale Gas Development (1). Springer Cham: Springer Cham.

MLA Style

Hefley, William, E.., Wang, Yongsheng. "The Global Impact of Unconventional Shale Gas Development". 1 Springer Cham: Springer Cham, 2018. Text.