Gaya APA
Duck down. (2004).
Jakarta:
Gramedia Pustaka Utama.
Gaya Chicago
Duck down.
~.
Jakarta:
Gramedia Pustaka Utama,
2004.
Buku.
Gaya MLA
Duck down.
~.
Jakarta:
Gramedia Pustaka Utama,
2004.
Buku.
Gaya Turabian
Duck down.
Jakarta:
Gramedia Pustaka Utama,
2004.
Buku.