Gaya APA
Petersen, L.
(2004).
Bagaimana memotivasi anak belajar: stop and think learning
.
Jakarta:
Grasindo.
Gaya MLA
Petersen, Lindy.
"Bagaimana memotivasi anak belajar: stop and think learning".
Jakarta:
Grasindo,
2004.
Text / Book.