文本Wolfram Research (1988)，WorkingPrecision，Wolfram 语言函数，https://reference.wolfram.com/language/ref/WorkingPrecision.html （更新于 2003 年）.
CMSWolfram 语言. 1988. "WorkingPrecision." Wolfram 语言与系统参考资料中心. Wolfram Research. 最新版本 2003. https://reference.wolfram.com/language/ref/WorkingPrecision.html.
APAWolfram 语言. (1988). WorkingPrecision. Wolfram 语言与系统参考资料中心. 追溯自 https://reference.wolfram.com/language/ref/WorkingPrecision.html 年
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