APA (7th ed.) Citation

Mackie, J. D. (1978). A history of Scotland (2nd ed.). Penguin.

Chicago Style (17th ed.) Citation

Mackie, J. D. A History of Scotland. 2nd ed. New York: Penguin, 1978.

MLA (9th ed.) Citation

Mackie, J. D. A History of Scotland. 2nd ed. Penguin, 1978.