Write the author's name if there is a specific one listed for that encyclopedia. Start with his last name, followed by his first name and a period.
Write the name of the specific article used, ending in a period.
Write the name of the encyclopedia, ending in a period. The encyclopedia name should either be underlined or italicized. Include the edition (i.e. "3rd ed." or "8th ed.") and a period.
List the publication information beside what you have already written. Start with the city, the publisher and the year of publication. If the encyclopedia is well known, such as Encyclopedia Britannica, this information need not be included.
Include the range of pages the article appears on (i.e. 14-23).