You're pretty quick there Taggy. I'm glad people like you are looking out for readers. I'll add a source in just a moment. I'm looking for instructions on how to do it.  YOU 

Hey. I'm sorry if I was a bit rude. I had a rough day and I came to Wikipedia for some peace and quiet— when I see something wrong I just can't wait to fix it! I care about this project that much. I'll try and be friendlier next time.  I know how important it is to be civil, and I'm working on it. I hope you stay around. This link might help you out: Help:Introduction to referencing    

I'm so pleased with you both.  Now, carry on, we have an encyclopedia to write ;)