APA (7th ed.) Citation

Semmens, M. C. (1982). The capacity of some grade-separated roundabout entries. Transport and Road Research Laboratory.

Chicago Style (17th ed.) Citation

Semmens, Marie C. The Capacity of Some Grade-separated Roundabout Entries. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1982.

MLA (9th ed.) Citation

Semmens, Marie C. The Capacity of Some Grade-separated Roundabout Entries. Transport and Road Research Laboratory, 1982.