文本

Wolfram Research (1996)，$TopDirectory，Wolfram 语言函数，https://reference.wolfram.com/language/ref/$TopDirectory.html （更新于 2002 年）.

CMS

Wolfram 语言. 1996. "$TopDirectory." Wolfram 语言与系统参考资料中心. Wolfram Research. 最新版本 2002. https://reference.wolfram.com/language/ref/$TopDirectory.html.

APA

Wolfram 语言. (1996). $TopDirectory. Wolfram 语言与系统参考资料中心. 追溯自 https://reference.wolfram.com/language/ref/$TopDirectory.html 年

BibTeX

@misc{reference.wolfram_2026_$topdirectory, author="Wolfram Research", title="{$TopDirectory}", year="2002", howpublished="\url{https://reference.wolfram.com/language/ref/$TopDirectory.html}", note=[Accessed: 26-August-2026]}

BibLaTeX

@online{reference.wolfram_2026_$topdirectory, organization={Wolfram Research}, title={$TopDirectory}, year={2002}, url={https://reference.wolfram.com/language/ref/$TopDirectory.html}, note=[Accessed: 26-August-2026]}