Gaya APA
Usman, K. (2008).
Kurcaci Putih: Lomba Menabung Awan (The White Dwarf: Collecting Clouds Competition) .
Jakarta:
Lini Bestari Kids.
Gaya MLA
Usman, K..
Kurcaci Putih: Lomba Menabung Awan (The White Dwarf: Collecting Clouds Competition).
Jakarta:
Lini Bestari Kids,
2008.
Book - Fiction.