Cita APA (7th ed.)
Henkel, R. E. (1976). Tests of significance / R.E. Henkel. Sage.
Cita Chicago (17th ed.)
Henkel, Ramon E. Tests of Significance / R.E. Henkel. Los Angeles, EUA: Sage, 1976.
Cita MLA (9th ed.)
Henkel, Ramon E. Tests of Significance / R.E. Henkel. Sage, 1976.
Atenció: Aquestes cites poden no estar 100% correctes.