Gaya APA
Spyri, Johanna. ().
The Story Of Heidi .
London:
Usborne.
Gaya Chicago
Spyri, Johanna.
The Story Of Heidi.
London:
Usborne,
.
Text.
Gaya MLA
Spyri, Johanna.
The Story Of Heidi.
London:
Usborne,
.
Text.
Gaya Turabian
Spyri, Johanna.
The Story Of Heidi.
London:
Usborne,
.
Print.