Alternative text book for bachelor's level

The assigned textbook for this course for the bachelor level is unfortunately out of print: Nils Melzer, International Humanitarian Law: A Comprehensive Introduction (ICRC, 2016) (331 pages).

An alternative to this book is:  Nicholas Tsagourias and Alasdair Morrison, International Humanitarian Law: Cases, Materials and Commentary (Cambridge University Press, 2018) https://www.cambridge.org/no/academic/subjects/law/humanitarian-law/international-humanitarian-law-cases-materials-and-commentary (35 GBP).