Text

Wolfram Research (2012), NumberOfDirectedGraphs, Wolfram Language function, https://reference.wolfram.com/language/Combinatorica/ref/NumberOfDirectedGraphs.html.

CMS

Wolfram Language. 2012. "NumberOfDirectedGraphs." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/Combinatorica/ref/NumberOfDirectedGraphs.html.

APA

Wolfram Language. (2012). NumberOfDirectedGraphs. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/Combinatorica/ref/NumberOfDirectedGraphs.html

BibTeX

@misc{reference.wolfram_2025_numberofdirectedgraphs, author="Wolfram Research", title="{NumberOfDirectedGraphs}", year="2012", howpublished="\url{https://reference.wolfram.com/language/Combinatorica/ref/NumberOfDirectedGraphs.html}", note=[Accessed: 05-December-2025]}

BibLaTeX

@online{reference.wolfram_2025_numberofdirectedgraphs, organization={Wolfram Research}, title={NumberOfDirectedGraphs}, year={2012}, url={https://reference.wolfram.com/language/Combinatorica/ref/NumberOfDirectedGraphs.html}, note=[Accessed: 05-December-2025]}