Ford, G. (1978). UNISIST guidelines for the conduct of user studies. UNESCO.
Chicago-viite (17. p.)Ford, Geoffrey. UNISIST Guidelines for the Conduct of User Studies. Paris: UNESCO, 1978.
MLA-viite (9. p.)Ford, Geoffrey. UNISIST Guidelines for the Conduct of User Studies. UNESCO, 1978.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.