文本

Wolfram Research (1991)，$Packages，Wolfram 语言函数，https://reference.wolfram.com/language/ref/$Packages.html.

CMS

Wolfram 语言. 1991. "$Packages." Wolfram 语言与系统参考资料中心. Wolfram Research. https://reference.wolfram.com/language/ref/$Packages.html.

APA

Wolfram 语言. (1991). $Packages. Wolfram 语言与系统参考资料中心. 追溯自 https://reference.wolfram.com/language/ref/$Packages.html 年

BibTeX

@misc{reference.wolfram_2026_$packages, author="Wolfram Research", title="{$Packages}", year="1991", howpublished="\url{https://reference.wolfram.com/language/ref/$Packages.html}", note=[Accessed: 15-August-2026]}

BibLaTeX

@online{reference.wolfram_2026_$packages, organization={Wolfram Research}, title={$Packages}, year={1991}, url={https://reference.wolfram.com/language/ref/$Packages.html}, note=[Accessed: 15-August-2026]}