Gaya APA
O.Prochaska, J., DiClemente, C, C.
(1984).
The Transtheoretical Approach
.
Illinois:
Dow Jones-Irwin.
Gaya MLA
O.Prochaska, James., DiClemente, Carlo, C..
"The Transtheoretical Approach".
Illinois:
Dow Jones-Irwin,
1984.
Text.