Gaya APA
Kusuma, Y.
(2010).
Creative problem solving
(
Ed. 1 Jil. 1)
.
Solo:
Jelajah Nusa.
Gaya MLA
Kusuma, Yuriadi.
"Creative problem solving".
Ed. 1 Jil. 1
Solo:
Jelajah Nusa,
2010.
KONTEN ENTREPRENEUR.