APA (7th ed.) Citation

Ludlum, D. M. (1971). Weather record book: United States and Canada. Weatherwise.

Chicago Style (17th ed.) Citation

Ludlum, David M. Weather Record Book: United States and Canada. Princeton, N.J.: Weatherwise, 1971.

MLA (9th ed.) Citation

Ludlum, David M. Weather Record Book: United States and Canada. Weatherwise, 1971.