Council, 2. S. C. D. (1978). Recreation. London : National Playing Fields Association.
Chicago-referens (17:e uppl.)Council, 2613 South Cambridgeshire District. Recreation. London : National Playing Fields Association, 1978.
MLA-referens (9:e uppl.)Council, 2613 South Cambridgeshire District. Recreation. London : National Playing Fields Association, 1978.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.