Drew, C. J., Hardman, M. L., & Logan, D. R. (1988). Mental retardation: A life cycle approach (4th ed.). Merrill.
芝加哥风格引文Drew, Clifford J., Michael L. Hardman, 与 Donald R. Logan. Mental Retardation: A Life Cycle Approach. 4th ed. Columbus, Ohio: Merrill, 1988.
MLA引文Drew, Clifford J., et al. Mental Retardation: A Life Cycle Approach. 4th ed. Merrill, 1988.
警告：这些引文格式不一定是100％准确.