Gaya APA
Harahap, Mary E.. (1995).
The Magic Wallet .
Bandung:
ITB.
Gaya Chicago
Harahap, Mary E..
The Magic Wallet.
Bandung:
ITB,
1995.
Text.
Gaya MLA
Harahap, Mary E..
The Magic Wallet.
Bandung:
ITB,
1995.
Text.
Gaya Turabian
Harahap, Mary E..
The Magic Wallet.
Bandung:
ITB,
1995.
Print.