File:Enyclopedia Britannica International Chinese Edition.jpg - Wikipedia
File:Enyclopedia Britannica International Chinese Edition.jpg - Wikipedia,The World Book Encyclopedia : Vol. 21, W-X-Y-Z - World Book Inc (1999, HC),Amazon.com: DK Children's Encyclopedia 兒童百科全書: 9781465462077: DK: 圖書,Encyclopedia From A to Z: Hardcover Book,Amazon.com: Encyclopaedia Britannica, Eleventh Edition.