It is important that the information in Wikipedia be true and accurate. To help ensure this, we have the Verifiability Policy, which states that all facts presented on Wikipedia must be verifiable.
When writing facts, it is very important that you cite your sources! Stick to a factual style even when writing about fiction or opinions. Providing references is particularly important for controversial opinions—instead of using weasel words like some people believe... you should cite sources to help readers learn who believes what, and why.
Keep in mind that the folks at Wikipedia's Reference desk are very knowledgeable across a wide range of subjects, and they may be able to help you track down source references for a particular detail.
Let's start off with the basics. You can make italics by putting in 2 of these(') before and after the word, in other words, I made the word italics italic by doing this ''italics''. You can also make things bold by using the same method,only this time use 3 's, in other words, I made the word bold bold by doing this '''bold'''. Finally, you can make bold italics by placing 5 's before and after the word or words, in other words, I made the bold italics bold and italic by doing this '''''bold italics'''''.