Gaya APA

osterwalder,alexander, . et al (2017). THE BIG PAD OF 50+50 A SUPPLEMENT TO BUSINESS MODEL GENERATION AND VALUE PROPOSITION DESIGN . Canada: John Wiley& Sons.

Gaya MLA

osterwalder,alexander, . et al. "THE BIG PAD OF 50+50 A SUPPLEMENT TO BUSINESS MODEL GENERATION AND VALUE PROPOSITION DESIGN". Canada: John Wiley& Sons, 2017. Reference.