Gaya APA
The Secret Of Happy Children. (2004).
Jakarta:
Gramedia Pustaka Utama.
Gaya Chicago
The Secret Of Happy Children.
.
Jakarta:
Gramedia Pustaka Utama,
2004.
Buku.
Gaya MLA
The Secret Of Happy Children.
.
Jakarta:
Gramedia Pustaka Utama,
2004.
Buku.
Gaya Turabian
The Secret Of Happy Children.
Jakarta:
Gramedia Pustaka Utama,
2004.
Buku.