Gaya APA
Heffron, Raphael J. (2015).
Energy Law : An Introduction .
Springer:
New York.
Gaya Chicago
Heffron, Raphael J.
Energy Law : An Introduction.
Springer:
New York,
2015.
Text.
Gaya MLA
Heffron, Raphael J.
Energy Law : An Introduction.
Springer:
New York,
2015.
Text.
Gaya Turabian
Heffron, Raphael J.
Energy Law : An Introduction.
Springer:
New York,
2015.
Print.