Heilmann, R. L., Mayer, H. M., & Schenker, E. (1986). Great Lakes transportation in the eighties. University of Wisconsin Sea Grant Institute.
Chicago Style (17th ed.) CitationHeilmann, Ronald L., Harold M. Mayer, and Eric Schenker. Great Lakes Transportation in the Eighties. Madison, WI: University of Wisconsin Sea Grant Institute, 1986.
MLA (9th ed.) CitationHeilmann, Ronald L., et al. Great Lakes Transportation in the Eighties. University of Wisconsin Sea Grant Institute, 1986.
Warning: These citations may not always be 100% accurate.