Knetsch, J. L. (1974). Outdoor recreation and water resources planning. American Geophysical Union.
芝加哥风格引文Knetsch, Jack L. Outdoor Recreation and Water Resources Planning. Washington: American Geophysical Union, 1974.
MLA引文Knetsch, Jack L. Outdoor Recreation and Water Resources Planning. American Geophysical Union, 1974.
警告：这些引文格式不一定是100％准确.