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3. Butler, J. E. and Glenn Fuguitt, “Small Town Population Change and Distance from Larger Towns: A Replication of Hassinger’s Study,”Rural Sociology,XXXV (1970), pp. 396–409.
4. Brozowski, R. G. Romsa, and A. Lall, “Some Factors Influencing Population Change in Rural Ontario,”Scottish Geographical Magazine,LXXXIX (1973), pp. 131–138.
5. Clemente, Frank, “What Industry Really Means to a Small Town,”Farm Economics.University Park: Cooperative Extension Service, U.S.D.A., Pennsylvania State University, April 1975.