Gaya APA
Piirto, J. (2011).
Creativity for 21st Century Skills: How to Embed Creativity into the Curriculum (Trawas) .
Belanda:
Sense Publishers.
Gaya MLA
Piirto, Jane.
"Creativity for 21st Century Skills: How to Embed Creativity into the Curriculum (Trawas)".
Belanda:
Sense Publishers,
2011.
Text.