APA
Kolb R., . (2015). Peremptory international law -- Jus cogens. Oxford, United Kingdom: Hart Publishing Ltd.
Chicago
Kolb Robert, . 2015. Peremptory international law -- Jus cogens. Oxford, United Kingdom: Hart Publishing Ltd.
Harvard
Kolb R., . (2015). Peremptory international law -- Jus cogens. Oxford, United Kingdom: Hart Publishing Ltd.
MLA
Kolb Robert, . Peremptory international law -- Jus cogens. Oxford, United Kingdom: Hart Publishing Ltd. 2015.