https://www.savephilippineseas.org/cc-ci-govt-programs/deped-memorandum-no.-024%2C-s.-2019---2019-national-search-for-sustainable-and-eco-friendly-schools 2023-09-29 https://www.savephilippineseas.org/cc-ci-govt-programs/deped-memorandum-no.-223%2C-s.-2016---strengthening-the-implementation-of-the-gulayan-sa-paaralan-program-in-public-elementary-and-secondary-schools-nationwide 2023-09-29 https://www.savephilippineseas.org/cc-ci-govt-programs/amended-guidelines-on-the-implementation-of-gulayan-sa-paaralan-(gsp) 2023-09-29