APA (7th ed.) Citation

Gardiner, S. R. (1969). What Gunpowder Plot was. Greenwood Press.

Chicago Style (17th ed.) Citation

Gardiner, Samuel Rawson. What Gunpowder Plot Was. New York: Greenwood Press, 1969.

MLA (9th ed.) Citation

Gardiner, Samuel Rawson. What Gunpowder Plot Was. Greenwood Press, 1969.

Warning: These citations may not always be 100% accurate.