Try Google Advanced Search to retrieve pertinent and authoritative information which can effectively supplement the peer-reviewed journal articles and books you're using for your assignment. Google Advanced Searchhas a search screen which allows you to narrow your search efficiently. Click on the link below for access to it.
To reach the Google Advanced Search screen, go to google.com and enter: "Google advanced search". Click on Google Advanced Search and enter the subject of your search. You can specify language, time period, domain (.org), and file type (.pdf). This type of search will lead you to position and research papers of organizations focused on your topic.The search will also include some full-text journal articles. You can use Google Advanced Search to supplement your journal database and Library Catalog searches.