Percentage of Higher Education Institutions Offering Distance Education. US Department of Education.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Percentage of Higher Education Institutions Offering Distance Education. US Department of Education.
MLA -ийн эшлэл (9 дэх хэвлэлт)Percentage of Higher Education Institutions Offering Distance Education. US Department of Education.
Анхааруулга: Эдгээр ишлэлүүд үргэлж 100% үнэн зөв биш байж магадгүй.