There are several sources of literature review but few sources will be explained here.
Library: Library is a home of book both printed and non-printed copy. Just visit a credible literary such as one in your school (Academic Literary), National Library (Abuja) State Library, Private or special library depend on you are searching.
Borrow: You can borrow books and other materials from friends, family even teachers if you consider that they have such materials.
Internet: this is the most recent source of literature for project especially in Nigeria because the internet contains millions of academic database and other valuable sources of information including journals and blogs. Just search you key words appropriately.
Newspapers and Magazines: Newspapers and magazines are good sources of literature and data for a research. Newspaper offers news and other information that researcher can borrow ideas from. In fact, those doing content analysis use newspaper often.
Journal and Conference Papers: Researches and write ups published in a journal or presented at a conference offers valuable materials for a research. In fact, it offers empirical information for new researchers who may want to know what has been done in the area.