APA引文

UNESCO. (1999). Adult learning and the challenges of the 21st century. UNESCO.

Chicago Edition Citation

UNESCO. Adult Learning and the Challenges of the 21st Century. Germany: UNESCO, 1999.

MLA引文

UNESCO. Adult Learning and the Challenges of the 21st Century. UNESCO, 1999.

警告：這些引文格式不一定是100％准確.