Write the last name of the editor followed by a comma, then the first initials of the editor followed by (Ed.) and a period. For example, Janssen, S. (Ed.).
Write the year of publication in parentheses followed by a period. For example, Janssen, S. (Ed.). (2011).
Write the title of the almanac, followed by a period. For example, Janssen, S. (Ed.). (2011). The world almanac and book of facts 2011.
Write the city of publication followed by a colon. For example, Janssen, S. (Ed.). (2011). The world almanac and book of facts 2011. New York:
Write the name of the publisher followed by a period. For example, Janssen, S. (Ed.). (2011). The world almanac and book of facts 2011. New York: Infobase Learning.