What in the world is the author of the caption sir william ramsay on wikipedia?

i have to do ia project on xenon, and i need a bibliography for any picture i do. i couldn't find cite this page on the caption please help me, and i will be very happy if you tell me the bibliography for morris william travers, which is on wikipedia. i need for my bibliography the author, the copyright day, the day you found it, the website, and the website address when i mean website, i mean like instead of doing groiler.com/........ to do just groiler