Gaya APA
Baer, G.
(1989).
Thump, Thump, Rat-a- Tat- Tat
.
Singapore:
Harper & Row, Publishers.
Gaya MLA
Baer, Gene.
"Thump, Thump, Rat-a- Tat- Tat".
Singapore:
Harper & Row, Publishers,
1989.
Text.