Spengler, J. J. 1., Smith, R. S. 1., De Vyver, F. T. 1., & Allen, W. R. (1972). Population economics: Selected essays of Joseph J. Spengler. Durham, North Carolina: Duke University Press.
Chicago Style CitationSpengler, Joseph John 1902-, Robert Sidney 1904-1969 Smith, Frank Traver 1904-1980 De Vyver, and William R. Allen. Population Economics: Selected Essays of Joseph J. Spengler. Durham, North Carolina: Duke University Press, 1972.
MLA CitationSpengler, Joseph John 1902-, Robert Sidney 1904-1969 Smith, Frank Traver 1904-1980 De Vyver, and William R. Allen. Population Economics: Selected Essays of Joseph J. Spengler. Durham, North Carolina: Duke University Press, 1972.
Warning: These citations may not always be 100% accurate.