Cita APA (7a ed.)
Crawley, G. W., & Butler, M. (1971). British Journal of Photography Annual 1972.
Cita estilo Chicago (17a ed.)
Crawley, Geoffrey W., y Mark Butler. British Journal of Photography Annual 1972. 1971.
Cita MLA (9a ed.)
Crawley, Geoffrey W., y Mark Butler. British Journal of Photography Annual 1972. 1971.
Precaución: Estas citas no son 100% exactas.