Berg, D. W. (1968). Systematic collection of beach data. U.S. Coastal Engineering Research Center.
芝加哥风格引文Berg, Dennis W. Systematic Collection of Beach Data. [Washington]: U.S. Coastal Engineering Research Center, 1968.
MLA引文Berg, Dennis W. Systematic Collection of Beach Data. U.S. Coastal Engineering Research Center, 1968.
警告：这些引文格式不一定是100％准确.