Heron, D. W., & Machlup, F. (1977). More on "The Production and Distribution of Knowledge in the United States." Short Shoelaces: Machlup Looks at Library Statistics.
Chicago Style (17th ed.) CitationHeron, David W., and Fritz Machlup. More on "The Production and Distribution of Knowledge in the United States." Short Shoelaces: Machlup Looks at Library Statistics. 1977.
MLA (9th ed.) CitationHeron, David W., and Fritz Machlup. More on "The Production and Distribution of Knowledge in the United States." Short Shoelaces: Machlup Looks at Library Statistics. 1977.
Warning: These citations may not always be 100% accurate.