Gaya APA
Tripp, T, L, &, P.
(2011).
Bagaimana Orang Berubah ? ( How People Change )
.
Surabaya:
Momentum.
Gaya MLA
Tripp, Tim, Lane, &, Paul.
"Bagaimana Orang Berubah ? ( How People Change )".
Surabaya:
Momentum,
2011.
Text.