Sunday
is a day of the week.
Examples
Wolfram Research (2012), Sunday, Wolfram Language function, https://reference.wolfram.com/language/ref/Sunday.html.
Text
Wolfram Research (2012), Sunday, Wolfram Language function, https://reference.wolfram.com/language/ref/Sunday.html.
BibTeX
BibLaTeX
CMS
Wolfram Language. 2012. "Sunday." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/Sunday.html.
APA
Wolfram Language. (2012). Sunday. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/Sunday.html