APA (7th ed.) Citation

Johnstone, W. W., & Johnstone, J. A. (2023). A month of doomsdays. Pinnacle Books / Kensington Publishing Corp..

Chicago Style (17th ed.) Citation

Johnstone, William W., and J. A. Johnstone. A Month of Doomsdays. New York: Pinnacle Books / Kensington Publishing Corp., 2023.

MLA (8th ed.) Citation

Johnstone, William W., and J. A. Johnstone. A Month of Doomsdays. Pinnacle Books / Kensington Publishing Corp., 2023.

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