APA (7th ed.) Citation

Redfield, A. H. (1932). Asphalt demand and production lower in 1931. [publisher not identified].

Chicago Style (17th ed.) Citation

Redfield, Arthur Huber. Asphalt Demand and Production Lower in 1931. Washington, D.C.: [publisher not identified], 1932.

MLA (9th ed.) Citation

Redfield, Arthur Huber. Asphalt Demand and Production Lower in 1931. [publisher not identified], 1932.