Gaya APA
Bickel, R., Kenny, D, A. (2008).
Multilevel analysis for applied research : it`s just regression (1 st Indian sub-continent Edition).
Hoboken, NJ:
John Wiley.
Gaya MLA
Bickel, Robert., Kenny, David, A.
"Multilevel analysis for applied research : it`s just regression".
1 st Indian sub-continent Edition
Hoboken, NJ:
John Wiley,
2008.
Text.