Meetham, A. R., & Hudson, R. A. (1969). Encyclopaedia of linguistics, information, and control ([1st ed.].). Pergamon Press.

Meetham, A. R., and R. A. Hudson. Encyclopaedia of Linguistics, Information, and Control. [1st ed.]. Oxford, New York: Pergamon Press, 1969.

Meetham, A. R., and R. A. Hudson. Encyclopaedia of Linguistics, Information, and Control. [1st ed.]. Pergamon Press, 1969.