Gaya APA
Canfield, Jack. (2011).
Think Positive .
Jakarta:
Gramedia Pustaka Utama.
Gaya Chicago
Canfield, Jack.
Think Positive.
Jakarta:
Gramedia Pustaka Utama,
2011.
Text.
Gaya MLA
Canfield, Jack.
Think Positive.
Jakarta:
Gramedia Pustaka Utama,
2011.
Text.
Gaya Turabian
Canfield, Jack.
Think Positive.
Jakarta:
Gramedia Pustaka Utama,
2011.
Print.