Kugel, R. B., & Wolfensberger, W. (1969). Changing patterns in residential services for the mentally retarded. President's Committee on Mental Retardation.
芝加哥风格引文Kugel, Robert B., 与 Wolf Wolfensberger. Changing Patterns in Residential Services for the Mentally Retarded. Washington: President's Committee on Mental Retardation, 1969.
MLA引文Kugel, Robert B., 与 Wolf Wolfensberger. Changing Patterns in Residential Services for the Mentally Retarded. President's Committee on Mental Retardation, 1969.
警告：这些引文格式不一定是100％准确.