APA

Horowitz J. L., United States, . (1976). Would declaring Federal smog days reduce automobile travel in the Washington, D.C. area?: the results of a survey of travel by EPA employees on April 19, 1976. Washington, D.C: Office of Policy Analysis, Environmental Protection Agency.

Chicago

Horowitz Joel L, United States, . 1976. Would declaring Federal smog days reduce automobile travel in the Washington, D.C. area?: the results of a survey of travel by EPA employees on April 19, 1976. Washington, D.C: Office of Policy Analysis, Environmental Protection Agency.

Harvard

Horowitz J. L., United States, . (1976). Would declaring Federal smog days reduce automobile travel in the Washington, D.C. area?: the results of a survey of travel by EPA employees on April 19, 1976. Washington, D.C: Office of Policy Analysis, Environmental Protection Agency.

MLA

Horowitz Joel L, United States, . Would declaring Federal smog days reduce automobile travel in the Washington, D.C. area?: the results of a survey of travel by EPA employees on April 19, 1976. Washington, D.C: Office of Policy Analysis, Environmental Protection Agency. 1976.