Gaya APA
Leffler, W, L. et al (2011).
Deepwater Petroleum Exploration & Production: a nontechnical guide (2nd ed.).
OKLAHOMA:
PENNWELL.
Gaya MLA
Leffler, William, L.. et al.
"Deepwater Petroleum Exploration & Production: a nontechnical guide".
2nd ed.
OKLAHOMA:
PENNWELL,
2011.
print.