Makarczyk, Jerzy
Principles of a new international economic order: a study of international law in the making / by Jerzy Makarczyk
Martinus Nijhoff, 1988
 Buku Teks
Kelsen, Hans
Principles of international law
Holt, Rinehart and Winston, 1967
 Buku Teks SO
Marasinghe, Lakshman
Principles of international trade law
Butterworth Asia, 1998
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Brownlie, Ian
Principles of public international law
Oxford University Press, 1966
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Principles of international environmental law
by Philippe Sands [and others]
Cambridge University Press, 2012
 Buku Teks