APA aipamena

Kuuskraa Vello, Stevens Scott, Leeuwen Tyler Van, Moodhe Keith, & U.S. Energy Information Administration. World shale gas resources , an initial assessment of 14 regions outside the United States.

Chicago Style aipamena

Kuuskraa Vello, Stevens Scott, Leeuwen Tyler Van, Moodhe Keith, and U.S. Energy Information Administration. World Shale Gas Resources , an Initial Assessment of 14 Regions Outside the United States.

MLA aipamena

Kuuskraa Vello, et al. World Shale Gas Resources , an Initial Assessment of 14 Regions Outside the United States.