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]).
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]).