These closing proposals have run for some months now and have received a lot of community support from the language(s) involved. As you can read there, I have also been involved with proposing a certain course of action. I suggest that we now accept the proposals. 
https://meta.wikimedia.org/wiki/Proposals_for_closing_projects/Closure_of_Bosnian_Wiktionary
https://meta.wikimedia.org/wiki/Proposals_for_closing_projects/Closure_of_Bosnian_Wikibooks,_Wikinews,_Wikiquote_and_Wikisource