Gaya APA
Hopkins, C.
(2004).
Mates, Dates and Portobello Princesses Putri Portobello
.
Jakarta:
Gramedia Pustaka Utama.
Gaya MLA
Hopkins, Cathy.
"Mates, Dates and Portobello Princesses Putri Portobello".
Jakarta:
Gramedia Pustaka Utama,
2004.
.