APA

Morrissey J., . (1980). Effectiveness of flashing lights and flashing lights with gates in reducing accident frequency at public rail-highway crossings, 1975-1978. Waltham, MA: Input Output Computer Services, Inc.

Chicago

Morrissey J, . 1980. Effectiveness of flashing lights and flashing lights with gates in reducing accident frequency at public rail-highway crossings, 1975-1978. Waltham, MA: Input Output Computer Services, Inc.

Harvard

Morrissey J., . (1980). Effectiveness of flashing lights and flashing lights with gates in reducing accident frequency at public rail-highway crossings, 1975-1978. Waltham, MA: Input Output Computer Services, Inc.

MLA

Morrissey J, . Effectiveness of flashing lights and flashing lights with gates in reducing accident frequency at public rail-highway crossings, 1975-1978. Waltham, MA: Input Output Computer Services, Inc. 1980.