Multiple works, same author, same time, arrange dates in order and use letters after years to distinguish multiple publications by the same author in the same year. For example . The second time it is Smith et al. If a group is readily identified by its initials, spell it out only the first time. Use double quotes around the title of an article or chapter and underline a book, report or periodical.
Reference is cited in the reference list.
Because Internet sources are rarely marked with page numbers, you will not always be able to show where cited material comes from. IS cited in a reference list. The reference section follows the final page of the text and pages are numbered. When there are two or more books or articles by the same author, repeat the name of the author in each entry. We will use these conventions.