Gaya APA
Inkpen,Andrew, ., Moffet, M, H. (2011).
The Global Oil Gas Industry : Management, Strategy & Finance .
Oklahoma:
Penwell.
Gaya MLA
Inkpen,Andrew, ., Moffet, Michael, H..
"The Global Oil Gas Industry : Management, Strategy & Finance".
Oklahoma:
Penwell,
2011.
Text.