Fontana, A. (1977). The last frontier: The social meaning of growing old. Sage Publications.
芝加哥风格引文Fontana, Andrea. The Last Frontier: The Social Meaning of Growing Old. Beverly Hills, Calif.: Sage Publications, 1977.
MLA引文Fontana, Andrea. The Last Frontier: The Social Meaning of Growing Old. Sage Publications, 1977.
警告：这些引文格式不一定是100％准确.