APA (7th ed.) Citation

Donaldson, N., & Donaldson, B. (1980). How did they die? St. Martin's Press.

Chicago Style (17th ed.) Citation

Donaldson, Norman, and Betty Donaldson. How Did They Die? New York: St. Martin's Press, 1980.

MLA (9th ed.) Citation

Donaldson, Norman, and Betty Donaldson. How Did They Die? St. Martin's Press, 1980.