APA Style
Webster, J, G. et al (2006).
Ratings analysis: the theory and practice of audience research (3rd ed.).
nju:
L. Erlbaum Associates.
MLA Style
Webster, James, G.. et al.
"Ratings analysis: the theory and practice of audience research".
3rd ed.
nju:
L. Erlbaum Associates,
2006.
PDF.