When using other people's work to get information, it is important to cite the sources. Direct quotes from a source, ideas from someone else and visual materials from an outside source, for example, should all document the sources. This allows the readers to know where the research was done and track them down for more information if necessary, gives credit to those who shared their knowledge and ideas, and avoids plagiarism. Citations must document:
- author's name,
- titles of the material used (books, journals, articles),
- volume and issue numbers when appropriate,
- publisher name,
- date of publication,
- chapter and page numbers.
However, it is not necessary to cite sources when something is common knowledge. Therefore, the correct answer is B. Information that's common knowledge.