Organisation for Economic Co-Operation and Development & OECD. (2005). Lessons in danger: School safety and security. OECD.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Organisation for Economic Co-Operation and Development ба OECD. Lessons in Danger: School Safety and Security. París: OECD, 2005.
MLA -ийн эшлэл (9 дэх хэвлэлт)Organisation for Economic Co-Operation and Development ба OECD. Lessons in Danger: School Safety and Security. OECD, 2005.
Анхааруулга: Эдгээр ишлэлүүд үргэлж 100% үнэн зөв биш байж магадгүй.