Gaya APA
Rippin, S., Spartels, S. (2014).
A Billie B Mystery: Treasure Hunt .
Victoria, Australia:
Hardie Grant Egmont.
Gaya MLA
Rippin, Sally., Spartels, Stephanie.
"A Billie B Mystery: Treasure Hunt".
Victoria, Australia:
Hardie Grant Egmont,
2014.
Text.