Resources
When you start working on a paper, for example, about the design and success of the Senz umbrella, you need different types of relevant information: background information about the development of umbrellas through the ages, an overview of the latest research into umbrellas complete with results in journal articles, the patent for the Senz umbrella, any standards that apply to umbrellas, as well as information about the marketing strategy used. For all these types of information, you need different documents, which you can find in different resources.