Cita APA (7a ed.)

Somerville, C. (1988). Christopher Somerville's fifty best river walks of Britain. Guild Publishing.

Cita Chicago Style (17a ed.)

Somerville, Christopher. Christopher Somerville's Fifty Best River Walks of Britain. London: Guild Publishing, 1988.

Cita MLA (9a ed.)

Somerville, Christopher. Christopher Somerville's Fifty Best River Walks of Britain. Guild Publishing, 1988.