Uhle, Christian Buhring
Kluwer Law International, 1996
Buku Teks
Bühring-Uhle, Christian
Kluwer Law International, 2006
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Park, William W.
Oxford University Press, 2012
Buku Teks
Blackshaw, Ian Stewart.
Cambridge University Press, 2009
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McIlwrath, Michael
Wolters Kluwer, 2010
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