APA
Kraemer H. C., Thiemann S., . (1987). How many subjects? : statistical power analysis in research. Newbury Park, Calif: Sage.
Chicago
Kraemer Helena Chmura, Thiemann Sue, . 1987. How many subjects? : statistical power analysis in research. Newbury Park, Calif: Sage.
Harvard
Kraemer H. C., Thiemann S., . (1987). How many subjects? : statistical power analysis in research. Newbury Park, Calif: Sage.
MLA
Kraemer Helena Chmura, Thiemann Sue, . How many subjects? : statistical power analysis in research. Newbury Park, Calif: Sage. 1987.