Hardert, R. A. (1974). Sociology and social issues. Rinehart Press.
芝加哥风格引文Hardert, Ronald A. Sociology and Social Issues. San Francisco: Rinehart Press, 1974.
MLA引文Hardert, Ronald A. Sociology and Social Issues. Rinehart Press, 1974.
警告：这些引文格式不一定是100％准确.