Citazione Stile APA (7a Edizione)

U.S. Energy Information Administration. Review of emerging resources , U.S. shale gas and shale oil plays.

Citazione stile Chigago Style (17a edizione)

U.S. Energy Information Administration. Review of Emerging Resources , U.S. Shale Gas and Shale Oil Plays.

Citatione MLA (9a ed.)

U.S. Energy Information Administration. Review of Emerging Resources , U.S. Shale Gas and Shale Oil Plays.