APA (7th ed.) Citation

Roberts, G. T. (1998). The language of the blue books: The perfect instrument of empire. University of Wales Press.

Chicago Style (17th ed.) Citation

Roberts, Gwyneth Tyson. The Language of the Blue Books: The Perfect Instrument of Empire. Cardiff: University of Wales Press, 1998.

MLA (9th ed.) Citation

Roberts, Gwyneth Tyson. The Language of the Blue Books: The Perfect Instrument of Empire. University of Wales Press, 1998.