Answer: memos
research papers
Explanation:
A memorandum which is often shorten as memo is used to communicate in the business environment.
An electronic mail is regarded as a method but which people or workers in a company can used to communicate with one another. This is done by exchanging messages through the use of an electronic devices.
Research paper is an essay written with regards to a particular topic or subject area.
Therefore, common writing formats include memos, e-mails and research papers. A joke is not a writing format.
