APA

Simons F., . (1971). Proposed warrants for the installation of traffic signals at intersections. Dublin: National Institute for Physical Planning and Construction Research. RT nr 80.

Chicago

Simons F, . 1971. Proposed warrants for the installation of traffic signals at intersections. Dublin: National Institute for Physical Planning and Construction Research. RT nr 80.

Harvard

Simons F., . (1971). Proposed warrants for the installation of traffic signals at intersections. Dublin: National Institute for Physical Planning and Construction Research. RT nr 80.

MLA

Simons F, . Proposed warrants for the installation of traffic signals at intersections. Dublin: National Institute for Physical Planning and Construction Research. RT nr 80. 1971.