On one side of the family because of the country they lived, there are no sources. I've just added images either of sources or of the person. To be specific my family spent time in Rhodesia, my father died of a gunshot wound, there are no references, therefore I've only given my own personal account of events.
WikiTree is designed to share and be one big family. I was amazed when adding profiles to find someone else had added a few already, they knew things about that ancestor I had no knowledge of so I personally found it informative and extremely interesting.
Referring to your comment - I've had a quick nose at your 'contributions' and don't understand why some that you mention - 'my whole entry name, birth date, death date are deleted. Can you clarify as you have already made a number of profiles.