united nations development program. (1998). Human Development Report 1998. unites nations development programme.
Cita Chicago (17th ed.)united nations development program. Human Development Report 1998. new york: unites nations development programme, 1998.
Cita MLA (9th ed.)united nations development program. Human Development Report 1998. unites nations development programme, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.