Information sources which may vary with the interest and type of his study. Information sources may be grouped differently by different authors. It can be observed from Table 5a that majority of the respondents used information sources were books (43.10%), periodicals (31.03), reference sources (12.07%), thesis and project work (8.62%), conference processing (3.45%) and others (1.72%). Table 5b shows that chi-square calculated.value is 15.27, which is less than its tabulated value at 5% level of significance. The null hypothesis is accepted. The result of chi-square test indicates that there is no significant difference among the respondents with regard to the use of formal information sources to the library.