Google the question, "What is the role of purchasing in new product development?" for our purposes, a 'role' can include any form of contribution to NPD, so this would include activities or responsibilities, etc.

Locate five sources of information that appear to have valid, useful information. Sources can be websites, blogs, articles, or any other type of website. List them with complete web addresses.

Create a summary table that lists the five sources across the top, then on each line of the table, list a role that is mentioned and check off the articles that it is listed in

Organize your table, so that rows at the top represent the roles mentioned in all five articles. Below this/these line(s) list the roles mentioned in 4 out of five sources. Repeat this process for roles mentioned 3, 2, and one time in the sources. In the table, make another column (on the far right) that notes whether the role requires a relationship with

An internal (to the purchasing organization) department or function and if so, indicate the department(s),

An external (to the purchasing organization) entity/organization.

Which source/article seems to be the best source of info.

Which source(s)/article(s) appear to provide additional/supplemental information beyond the info provided in the 'best' source or article - note the unique and meaningful contributions of each supplemental article that you identify. Hint, if the bottom rows of your table indicate no roles that are uniquely to one or two sources, then you list here of supplemental sources / articles may be empty or very short. On the other hand, if you list several roles (in rows at the bottom of your table) showing that many of your articles contributed unique info, then you could identify the non 'best' articles as contributing additional relatively unique information to the table.