W R ยท William R.
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Mission of Friar William of Rubruck: His Journey to the Court of the Great Khan Mongke, 1253-1255: His Journey to the Court of the Great Khan Mongke, 1253-55 | 978-O-9O418O-29-9 (O-9O418O-29-8) | 1999 |