Updated Author Guidelines: APA Style and Required Declarations

The Author Guidelines of IJES : Indonesian Journal of Environmental Sustainability have been revised. Main changes for new submissions:

• References follow APA Style (7th edition), with at least 15 references, mostly primary sources from the last 10 years.
• Maximum length is 20 pages in the journal template.
• Every manuscript includes declarations on author contributions, funding, conflict of interest, AI use, data availability, and ethical approval.
• Author identities are entered only in the submission metadata in OJS, not in the manuscript file, to keep the review double-blind.