Committee on an Aging Society (U.S.) & Symposium on Unpaid Productive Roles in an Aging Society. (1986). Productive roles in an older society. National Academy Press.
芝加哥风格引文Committee on an Aging Society (U.S.) 与 Symposium on Unpaid Productive Roles in an Aging Society. Productive Roles in an Older Society. Washington, D.C.: National Academy Press, 1986.
MLA引文Committee on an Aging Society (U.S.) 与 Symposium on Unpaid Productive Roles in an Aging Society. Productive Roles in an Older Society. National Academy Press, 1986.
警告：这些引文格式不一定是100％准确.