APA-referens (7:e uppl.)

Espinel Bayona Yenica, Guerrero Barbosa Thomas Edison, Palacio Sǹchez Darwin, & Pontificia Universidad Javeriana. Effects of the attributes associated with roadway geometry, traffic volumes and speeds on the incidence of accidents in a mid-size city.

Chicago-referens (17:e uppl.)

Espinel Bayona Yenica, Guerrero Barbosa Thomas Edison, Palacio Sǹchez Darwin, och Pontificia Universidad Javeriana. Effects of the Attributes Associated with Roadway Geometry, Traffic Volumes and Speeds on the Incidence of Accidents in a Mid-size City.

MLA-referens (9:e uppl.)

Espinel Bayona Yenica, et al. Effects of the Attributes Associated with Roadway Geometry, Traffic Volumes and Speeds on the Incidence of Accidents in a Mid-size City.