Citation must be provided for ?

You should cite all sources from which you get outside information. For example, if I'm writing an essay about cats, and I know that cats are fluffy, I can write that down with no need for citation. However, if I don't know that cats are felines until I read a Wikipedia page about them, then I need to site that page.

Dr.king , i would take my mental flight by egypt and i would watch god’s children in their magnificent trek from the dark dungeons of egypt through, or rather across the red sea, through the wilderness on toward the promised land.his  speech"i  have a dream" to encourage people that change will come. this  speech  was very important during the civil rights movement and was a contributing factor in the end of racial injustice in society. the  intended audience  of "i  have a dream" is white people. i hope this