Boardman and Tasker's Yeti Experience (sources)
- PRIMARY SOURCE: The Shining Mountain, by Pete Boardman, 1985 Vintage Books, USA. Pgs. 56, 62, 159. Online [preview]: https://books.google.com/books?id=3qisAwAAQBAJ&pg=PT66&dq=%22opened+a+box+of+thirty-six-mars+bars%22&hl=en&sa=X&ved=0ahUKEwig9vnay7_YAhUR8mMKHYJGB6EQ6AEIJjAA#v=onepage&q=%22opened%20a%20box%20of%20thirty-six-mars%20bars%22&f=false
- SECONDARY SOURCE: Strange & Unexplained Mysteries of the 20th Century, by Jenny Randles, 1994 Sterling Publishing, New York, USA. Pgs. 71,73. ISBN: 0-8069-0768-1. Online [snippet]: https://books.google.com/books?id=BvcJ5viFDhIC&q=%22Other+British+mountaineers,+including+the+late+Pete+Boardman%22&dq=%22Other+British+mountaineers,+including+the+late+Pete+Boardman%22&hl=en&sa=X&ved=0ahUKEwi4147Ph-rYAhVP62MKHeQwCfUQ6AEIJzAA