When developing a bibliographic list of sources for a formal report, the writer should $\_\_\_\_\_\_\_.$

a$.$ label the page "Works Cited" when using either the APA or MLA format

b$.$ include only published sources within your bibliographic list

c$.$ list the sources in alphabetical order

d$.$ omit the bibliographic list of sources because the in$-$text citations will identify each source used within the report