Tag King Tut

The Secrets of McCosh, Revealed

The part in italics is taken from Howard Carter's diary- it's how he described what happened when he discovered King Tut's tomb for the first time. I could just cut this out but I'm looking for a way to make the reader sort of realize that this is plagiarized from that diary... I'm not sure how to do that... I could just have an asterisk or something I guess..?