APA

Rhode Island Statewide Planning Program. Report 41, . (1981). Transportation element of the state implementation plan for air quality. Providence, RI: Rhode Island Statewide Planning Program. Report 41.

Chicago

Rhode Island Statewide Planning Program. Report 41, . 1981. Transportation element of the state implementation plan for air quality. Providence, RI: Rhode Island Statewide Planning Program. Report 41.

Harvard

Rhode Island Statewide Planning Program. Report 41, . (1981). Transportation element of the state implementation plan for air quality. Providence, RI: Rhode Island Statewide Planning Program. Report 41.

MLA

Rhode Island Statewide Planning Program. Report 41, . Transportation element of the state implementation plan for air quality. Providence, RI: Rhode Island Statewide Planning Program. Report 41. 1981.