Gaya APA
Sands, Philippe. (1994).
Principles of international environmental law (edisi 1).
Ameria:
Publicaion Data.
Gaya Chicago
Sands, Philippe.
Principles of international environmental law.
edisi 1
Ameria:
Publicaion Data,
1994.
Text.
Gaya MLA
Sands, Philippe.
Principles of international environmental law.
edisi 1
Ameria:
Publicaion Data,
1994.
Text.
Gaya Turabian
Sands, Philippe.
Principles of international environmental law.
edisi 1
Ameria:
Publicaion Data,
1994.
Print.