灵犀工作室. (2009). 青少年最感兴趣的世界之奇: World chief wonders for youngsters. 青岛出版社.
Chicago Style (17th ed.) Citation灵犀工作室. 青少年最感兴趣的世界之奇: World Chief Wonders for Youngsters. 青岛出版社, 2009.
MLA (8th ed.) Citation灵犀工作室. 青少年最感兴趣的世界之奇: World Chief Wonders for Youngsters. 青岛出版社, 2009.
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