Lewis, Sian, 1998

Cooper, Anne Lloyd, Lewis, Sian,

Blyton, Enid, Lewis, Sian,

Lewis, Sian,

Lewis, Sian, Royse, Maria,

Lewis, Siân, 1945-, Lewis, Sian, Catt, Louis, 2000

Lewis, Siân, 1945-, Lewis, Sian, Cummings, Fiona, 2000

Lewis, Sian, Roberts, Esyllt Nest, Lewis, Siãan, 1945-, Owen, Carys Eurwen, Owen, Carys, 1999

Lewis, Sian, Howells, Graham, 2001

Lewis, Sian, 1999

Lewis, Siân, 1945-, Rees, Glyn, 1995

Lewis, Siân, 1945-, Qualifications, Curriculum and Assessment Authority for Wales, Cooper, Anne Lloyd, Qualifications, Curriculum & Assessment Authority for Wales, 2002

Lewis, Siân, 1945-, 2003

Lewis, Siân, 1945-, Jones, Jane Griffiths, 2007

Lewis, Siân, 1945-, Williams, Jenny, 1939-, 2001

Lewis, Siân, 1945-, Lewis, Sian, Catt, Louis, 2000

Lewis, Siân, 1945-, Lewis, Sian, Cummings, Fiona, 2000

Lewis, Siân, 1945-, Qualifications, Curriculum & Assessment Authority for Wales, Williams, Jenny, 1939-, 2002

Lewis, Siân, 1945-, Ap Dafydd, Myrddin, Field, James, 1959-, 2005

Lewis, Siân, 1945-, Leblond, Valériane, 1985-, 2015