You must manually type Roman numerals to cite them within a Microsoft Word document, but not to number its lists or pages. MS Word 2013 gives you several time-saving tools with which to format list and page numbers, so that they automatically and consistently appear as Roman numerals throughout your document.
Format Numbered Lists
Type the first item of a new list or select several pre-typed paragraphs. From the Home tab's Paragraph group, click the Numbering button's down-arrow. Pick the uppercase or lowercase Roman-numeral format to apply it on your list instantly. To set this format as the default for your document's numbered lists, reconfigure your Numbering button. Click the Styles group down-arrow on the Home tab, followed by "Options." Choose "Recommended" in the Select Style to Show box and click "OK." Then, click the List Paragraph down-arrow, followed by "Modify" and "Numbering." Select the Roman numeral format and click "OK."
Set up Page Numbers
In the Header & Footer group of the Insert tab, click the "Page Number" button to open its gallery. Choose "Format Page Numbers" and then pick the "I, II, III" or "i, ii, iii" number format. Click "OK" to apply the selected Roman-numeral format to your page numbers. To quickly change existing pagination to Roman numerals, right-click on a page number in the document's header or footer and choose "Edit Field." Alternatively, click "Quick Parts" in the Text group, followed by "Field" and the "Page" field option. Select the uppercase or lowercase Roman numeral format and click "OK."