APA

Hillsman E. L., Southworth F., . (1990). Factors that may influence responses of the U.S. transportation sector to policies for reducing greenhouse gas emissions. : Transportation Research Record.

Chicago

Hillsman Edward L, Southworth Frank, . 1990. Factors that may influence responses of the U.S. transportation sector to policies for reducing greenhouse gas emissions. : Transportation Research Record.

Harvard

Hillsman E. L., Southworth F., . (1990). Factors that may influence responses of the U.S. transportation sector to policies for reducing greenhouse gas emissions. : Transportation Research Record.

MLA

Hillsman Edward L, Southworth Frank, . Factors that may influence responses of the U.S. transportation sector to policies for reducing greenhouse gas emissions. : Transportation Research Record. 1990.