APA-viite (7. p.)

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-viite (17. p.)

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

MLA-viite (9. p.)

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