united nations development program. (1998). Human Development Report 1998. unites nations development programme.
芝加哥风格引文united nations development program. Human Development Report 1998. new york: unites nations development programme, 1998.
MLA引文united nations development program. Human Development Report 1998. unites nations development programme, 1998.
警告：这些引文格式不一定是100％准确.