Harbeck, M. B. (1976). 2nd sourcebook for science supervisors. National Science Supervisors Association.
芝加哥风格引文Harbeck, Mary Blatt. 2nd Sourcebook for Science Supervisors. Washington: National Science Supervisors Association, 1976.
MLA引文Harbeck, Mary Blatt. 2nd Sourcebook for Science Supervisors. National Science Supervisors Association, 1976.
警告：这些引文格式不一定是100％准确.