ScienceDirect (Online service), Ibrahim, M. A., & Spitzer, W. O. (1979). The Case-control study: Consensus and controversy (First edition.). Pergamon Press.
Chicago Style (17th ed.) CitationScienceDirect (Online service), Michel A. Ibrahim, and Walter O. Spitzer. The Case-control Study: Consensus and Controversy. First edition. Oxford ; New York: Pergamon Press, 1979.
MLA (9th ed.) CitationScienceDirect (Online service), et al. The Case-control Study: Consensus and Controversy. First edition. Pergamon Press, 1979.
Warning: These citations may not always be 100% accurate.