Flora, S. D. (1956). Hailstorms of the United States. University of Oklahoma Press.
Chicago-viite (17. p.)Flora, Snowden Dwight. Hailstorms of the United States. Norman: University of Oklahoma Press, 1956.
MLA-viite (9. p.)Flora, Snowden Dwight. Hailstorms of the United States. University of Oklahoma Press, 1956.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.