Gaya APA
Ritchie, A. (2008).
It's Time To Sleep, You Crazy Sheep! Waktunya Tidur Domba Nakal! .
Jakarta:
Erlangga for Kids.
Gaya MLA
Ritchie, Alison.
"It's Time To Sleep, You Crazy Sheep! Waktunya Tidur Domba Nakal!".
Jakarta:
Erlangga for Kids,
2008.
Text.