APA (7th ed.) Citation

Rosamund Lupton & Dawn Murphy. (2011). Sister (1st.). Royal National Institute for the Blind.

Chicago Style (17th ed.) Citation

Rosamund Lupton and Dawn Murphy. Sister. 1st. London: Royal National Institute for the Blind, 2011.

MLA (9th ed.) Citation

Rosamund Lupton and Dawn Murphy. Sister. 1st. Royal National Institute for the Blind, 2011.

Warning: These citations may not always be 100% accurate.