It seems like you are asking for a citation for the source you've provided. Since the text doesn't mention an author, a title, publication date, or any identifiable information, I can’t create a full citation. However, I can help you format a basic citation if you have those details.
If this source is from a website, for example, it usually includes:
- Author's last name, first initial.
- (Year, Month Day).
- Title of the document.
- Website name.
- URL.
If you provide me the missing details, I can help you create the citation. Alternatively, if this content is from a specific textbook or article, please provide that information as well!