Graham, I. S. (1999). XML specification guide. New York: John Wiley & Sons.
Trích dẫn kiểu ChicagoGraham, Ian S. XML Specification Guide. New York: John Wiley & Sons, 1999.
MLA引文Graham, Ian S. XML Specification Guide. New York: John Wiley & Sons, 1999.
警告：这些引文格式不一定是100％准确.