BLALOCK, H. M. (1972). Social statistics. McGraw-Hill.
Cita Chicago (17th ed.)BLALOCK, Hubert M. Social Statistics. Tokyo: McGraw-Hill, 1972.
Cita MLA (9th ed.)BLALOCK, Hubert M. Social Statistics. McGraw-Hill, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.