• The Ultimate List of Customer Development Questions http://mfishbein.com/the-ultimate-list-of-customer-development-questions/ 6 comments 23/4/2014

• The Ultimate List of Customer Development Questions https://www.reddit.com/r/startups/comments/4y4sxh/the_ultimate_list_of_customer_development/ 3 comments 17/8/2016 startups