The appearance of initials usually occurs to distinguish primary authors having the same name. You might check to see if this is the case.
You don’t mention the style you’re using but you’d might also check the Author Name setting of your output style. [Go to the toolbar, select EDIT, OUTPUT STYLE, EDIT name of style. Then within the “Citations” section, select "Author Name.] In the right column under "Name Format, check that Initials is set to Last Name Only, and the Use initials only for primary authors is checked-off. Close the window when finished.