Have you tried the public library? Look for anything by John Wiseman (specifically, the SAS Survival Guide). When you find it, look at the other books on the shelf nearby. There may not be any that specifically deal with Jungle Survival, but many of the books will have a section dealing with it.

Other titles you can look for: Down But Not Out has a chapter dealing with Jungle Survival.

Also, you may want to do a search for the story of Juliane Koepke. She was a 17-year old girl who was the only survivor of a plane crash in the Peruvian jungle in 1971.