Gaya APA
Ritchie, A. (2013).
It's time to sleep, you crazy sheep = waktunya tidur domba nakal! (Cet. 3).
JAKARTA:
Erlangga For Kids.
Gaya MLA
Ritchie, Alison.
"It's time to sleep, you crazy sheep = waktunya tidur domba nakal!".
Cet. 3
JAKARTA:
Erlangga For Kids,
2013.
Text.