Mistake in image: in-text citations change from Cave to Sontag. i.e. would look like (Sontag, 1979: 4) not (Cave, 1979: 4).

Bibliography

Sontag, S. 1979. On Photography. Harmondsworth: Penguin.

The Genius of Photography – We are Family. 2009. Directed by Chris Rodley [film]. BBC.