Helper, R. (1969). Racial policies and practices of real estate brokers. University of Minnesota Press.
芝加哥风格引文Helper, Rose. Racial Policies and Practices of Real Estate Brokers. Minneapolis: University of Minnesota Press, 1969.
MLA引文Helper, Rose. Racial Policies and Practices of Real Estate Brokers. University of Minnesota Press, 1969.
警告：这些引文格式不一定是100％准确.