These sources allow you to search in scholarly literature in hospitality and business journals.
Image: Ann Arbor District Library. (2005). cap-graduation. Retrieved from https://flic.kr/p/dezvq6
These tutorials, handouts and videos explain help you understand the articles you are reading.
These sources include news coverage of the hospitality industry.
Image: Ifland, A. (2007). Mars Hill Church Seattle. Retrieved from https://flic.kr/p/2U8QKk
Industry or trade associations are "groups that represent the interests of the member firms of an industry" (Entrepreneur, n.d.).
They often make some information publicly available on their sites. These might include white papers or annual reports.