APA-ийн эшлэл(7 дахь хэвлэлт)

ebrary, Inc, Wellens, K., Rieter, E. R., & Waele, H. C. F. J. A. d. (2012). Evolving principles of international law: Studies in honour of Karel C. Wellens. Martinus Nijhoff Publishers.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

ebrary, Inc, Karel Wellens, E. R. Rieter, ба Henri Clemens Ferdinand Jozef Alexander de Waele. Evolving Principles of International Law: Studies in Honour of Karel C. Wellens. Boston: Martinus Nijhoff Publishers, 2012.

MLA -ийн эшлэл (9 дэх хэвлэлт)

ebrary, Inc, et al. Evolving Principles of International Law: Studies in Honour of Karel C. Wellens. Martinus Nijhoff Publishers, 2012.