World Federation of Education Associations. World Federation news. World Federation of Education Associations.
Chicago-viite (17. p.)World Federation of Education Associations. World Federation News. Columbia, Mo.: World Federation of Education Associations.
MLA-viite (8. p.)World Federation of Education Associations. World Federation News. World Federation of Education Associations.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.