Deletion of Plav-Gusinje massacres (1912-13) (2nd nomination)

Comment: while reviewing the DYK (Template:Did you know nominations/Plav-Gusinje massacres (1912-13)), I unfortunately found that several of the sources do not meet . I think that the article creator is acting in good faith but it's important to use high quality sources when writing about ethnic conflicts
Stance: merge
Cited policy: Wikipedia:Reliable sources (WP:RS)