Cita APA

Simmons, W. R., Wescott, J. W., & Hall, F. F. (1971). Acoustic echo sounding as related to air pollution in urban environments. Environmental Research Laboratories; for sale by the Supt. of Docs., U.S. Govt. Print. Off., Washington.

Citación estilo Chicago

Simmons, W. R., J. W. Wescott, and Freeman F. Hall. Acoustic Echo Sounding as Related to Air Pollution in Urban Environments. Boulder, Colo.: Environmental Research Laboratories; for sale by the Supt. of Docs., U.S. Govt. Print. Off., Washington, 1971.

Cita MLA

Simmons, W. R., et al. Acoustic Echo Sounding as Related to Air Pollution in Urban Environments. Environmental Research Laboratories; for sale by the Supt. of Docs., U.S. Govt. Print. Off., Washington, 1971.