(1977). Youth institutions and services: Present state and development. Unesco ; [distributed by Unipub].
芝加哥风格引文Youth Institutions and Services: Present State and Development. Paris : [New York]: Unesco ; [distributed by Unipub], 1977.
MLA引文Youth Institutions and Services: Present State and Development. Unesco ; [distributed by Unipub], 1977.
警告：这些引文格式不一定是100％准确.