united nations development program. (1998). Human Development Report 1998. unites nations development programme.
Chicago-viite (17. p.)united nations development program. Human Development Report 1998. new york: unites nations development programme, 1998.
MLA-viite (9. p.)united nations development program. Human Development Report 1998. unites nations development programme, 1998.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.