Não informado. (2019). Newsletter of the International Test Commission. International Test Commission.
Chicago-viite (17. p.)Não informado. Newsletter of the International Test Commission. [s.l.]: International Test Commission, 2019.
MLA-viite (8. p.)Não informado. Newsletter of the International Test Commission. International Test Commission, 2019.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.