Hughes, Gerard J.
The Nature of God / Gerard J. Hughes
Routledge, 1995
 Buku Teks
Griffith, John R.
Quantitative techniques for hospital planning and control
Lexington Books, 1972
 Buku Teks
Correa, Hector
Quantitative methods of educational planning / Hector Correa
International Textbook , 1969
 Buku Teks
Palys, T.S. (Theodore Stephen)
Research decisions : quantitative, qualitative, and mixed method approaches
Nelson Education, 2014
 Buku Teks SO
Ragin, Charles C.
The Comparative method : moving beyond qualitative and quantitative strategies
University of California Press, 1987
 Buku Teks SO