Plagiarism Policy

IJES : Indonesian Journal of Environmental Sustainability publishes only original work. Every submitted manuscript is checked for similarity with Turnitin before peer review, and again before publication when the text has changed substantially.

Similarity threshold

Maximum overall similarity: 20%, calculated with references and quotations excluded. A score below 20% does not by itself confirm originality: the editor also reads the report for large overlaps with a single source.

What counts as plagiarism

  • Copying text, data, figures, or ideas from another source without citation.
  • Close paraphrasing that keeps the structure and wording of the source.
  • Self-plagiarism: reusing substantial parts of the authors' own published work without citation, including redundant or duplicate publication.
  • Translating another work, or the authors' own published work, and presenting it as new.

How findings are handled

FindingAction
Similarity at or below 20%, with no significant overlap with a single sourceThe manuscript continues to peer review.
Similarity above 20%, or significant overlap with a single source, without intent to deceiveThe manuscript is returned to the authors for rewriting and correct citation before review.
Substantial copying, duplicate publication, or translated plagiarismThe manuscript is declined. The editor may inform the authors' institution.
Plagiarism found after publicationHandled under the Correction and Retraction policy; the outcome may be a correction or a retraction.

Authors' responsibilities

Authors confirm at submission that the manuscript is original, has not been published before, and is not under review elsewhere. Material from other sources, including the authors' own earlier work, must be cited. Text produced by AI tools is governed by the AI Policy.

Related: Publication Ethics · Research Misconduct · Peer Review Process