Gray, D. (1973). Reflections on the recreation and park movement: A book of readings. W.M.C. Brown.
芝加哥风格引文Gray, David. Reflections on the Recreation and Park Movement: A Book of Readings. David Gray: W.M.C. Brown, 1973.
MLA引文Gray, David. Reflections on the Recreation and Park Movement: A Book of Readings. W.M.C. Brown, 1973.
警告：这些引文格式不一定是100％准确.