Gaya APA
Bland , David J, Osterwalder, Alex. (2020).
Testing Business Ideas .
New Jersey:
John Wiley & Sons..
Gaya Chicago
Bland , David J, Osterwalder, Alex.
Testing Business Ideas.
New Jersey:
John Wiley & Sons.,
2020.
Text.
Gaya MLA
Bland , David J, Osterwalder, Alex.
Testing Business Ideas.
New Jersey:
John Wiley & Sons.,
2020.
Text.
Gaya Turabian
Bland , David J, Osterwalder, Alex.
Testing Business Ideas.
New Jersey:
John Wiley & Sons.,
2020.
Print.