Gaya APA
Prochaska, J, O. (1984).
The transtheoretical approach: crossing traditional boundaries of therapy .
Homewood, Illinois:
Dow Jones-Irwin.
Gaya MLA
Prochaska, James, O.
"The transtheoretical approach: crossing traditional boundaries of therapy".
Homewood, Illinois:
Dow Jones-Irwin,
1984.
Text.