Brown, W. E. (1971). Islands of hope: Parks and recreation in environmental crisis. National Recreation and Park Association.
芝加哥风格引文Brown, William E. Islands of Hope: Parks and Recreation in Environmental Crisis. [Washington: National Recreation and Park Association, 1971.
MLA引文Brown, William E. Islands of Hope: Parks and Recreation in Environmental Crisis. National Recreation and Park Association, 1971.
警告：这些引文格式不一定是100％准确.