Encyclopædia Britannica | Encyclopædia Britannica Eleventh Edition | ''The New International Encyclopædia'' | The Encyclopædia of Ball Juggling | The Art of Heraldry: An Encyclopædia of Armory | Encyclopædia Universalis | Encyclopædia Perthensis | ''Encyclopædia Britannica'' | Edinburgh Encyclopædia | Charlie Dancey's Encyclopædia of Ball Juggling |
His other contributions include nearly 200 articles in the Encyclopaedia of Islam and some 100 articles in the Encyclopædia Iranica, as well as articles for Encyclopædia Britannica and Encyclopedia Americana.