Referring to Committee of Publication Ethics (CoPE), Lembaran Sejarah is strictly against the ethics of academic article publication for duplication of publication. It is mandatory that contributors (authors) provide a written declaration that a manuscript submitted has not been previously published and is not being considered for other publications. In addition, we have a commitment to ensure that all submissions are original. Therefore, the editorial office of our journal is responsible to cross-check to ensure that submitted manuscripts have not been published prior to their submission.

There is a limit to the extent that Lembaran Sejarah can examine submitted works. As such, we call upon external reviewers and the academic community to report any misconduct to our help desk officer via lembaran_sejarah@ugm.ac.id  for prompt action to be taken.

Lembaran Sejarah may initiate a retraction if a work is proven to be fraudulent, or an expression of concern if our editors have well-founded suspicion of misconduct. In addition, we can facilitate a replacement. In this case, the author(s)'s of the original article may wish to retract the flawed original article and replace it with a revised version.

Neither peer-reviewer' comments nor correspondence should contain personal attacks on authors. Editors and peer-reviewers should only criticize the work, not the researcher and should edit (or reject) letters containing personal or offensive statements.