APA Style
et.al., ., Osterwalder, A. (2014).
Value proposition design : how to create products and services customers want .
Hoboken, NJ:
Wiley.
MLA Style
et.al., ., Osterwalder, Alex.
"Value proposition design : how to create products and services customers want".
Hoboken, NJ:
Wiley,
2014.
.