APA (7th ed.) Citation

Warburton, R., & Warburton, M. C. (1970). Eighteen years in the Khyber, 1879-1898. Oxford University Press, Pakistan Branch.

Chicago Style (17th ed.) Citation

Warburton, Robert, and Mary Cecil Warburton. Eighteen Years in the Khyber, 1879-1898. Lahore: Oxford University Press, Pakistan Branch, 1970.

MLA (9th ed.) Citation

Warburton, Robert, and Mary Cecil Warburton. Eighteen Years in the Khyber, 1879-1898. Oxford University Press, Pakistan Branch, 1970.