Boswell, P. G. H. (1929). The geology of the country around Sudbury (Suffolk). H.M.S.O..
Cita Chicago (17th ed.)Boswell, Percy George Hamnall. The Geology of the Country Around Sudbury (Suffolk). London: H.M.S.O., 1929.
Cita MLA (8th ed.)Boswell, Percy George Hamnall. The Geology of the Country Around Sudbury (Suffolk). H.M.S.O., 1929.
Atenció: Aquestes cites poden no estar 100% correctes.