APA (7th ed.) Citation

Ashton, T. S., & Sykes, J. (1967). The coal industry of the eighteenth century ([2d ed.). A. M. Kelley.

Chicago Style (17th ed.) Citation

Ashton, T. S., and Joseph Sykes. The Coal Industry of the Eighteenth Century. [2d ed. New York: A. M. Kelley, 1967.

MLA (9th ed.) Citation

Ashton, T. S., and Joseph Sykes. The Coal Industry of the Eighteenth Century. [2d ed. A. M. Kelley, 1967.