Preston Mendenhall: UK parks 'dogged’ by exhibitionism, Open-air swingers use Internet to meet in public areas. In: NBC NEWS. (englisch, msn.com [abgerufen am 25. November 2008]).
popcenter.org
Richard Byrne: Setting the Boundaries – tackling Public Sex Environments in Country Parks. In: Planning Research Conference. 2003, S.12 (popcenter.org [PDF; abgerufen am 26. November 2008]).