Gaya APA
Ivanko, J., Kivirist, L. (2008).
ECOpreneuring: Putting Purpose and The planet Before Profits .
Canada:
New Society.
Gaya MLA
Ivanko, John., Kivirist, Lisa.
"ECOpreneuring: Putting Purpose and The planet Before Profits".
Canada:
New Society,
2008.
Text Book.