Gaya APA
ZEMKE, R., KRAMLINGER, T.
(1982).
Figuring things out:
.
California:
Addison-Wesley Publising Company.
Gaya MLA
ZEMKE, Ron., KRAMLINGER, Thomas.
"Figuring things out:".
California:
Addison-Wesley Publising Company,
1982.
Buku.