APA

Mace D. J., Garvey P. M. & Heckard R. F. (1994). Relative visibility of increased legend size vs. brighter materials for traffic signs. Final report. Washington DC: U.S. Department of Transportation.

Chicago

Mace Douglas J, Garvey Philip M and Heckard Robert F. 1994. Relative visibility of increased legend size vs. brighter materials for traffic signs. Final report. Washington DC: U.S. Department of Transportation.

Harvard

Mace D. J., Garvey P. M. and Heckard R. F. (1994). Relative visibility of increased legend size vs. brighter materials for traffic signs. Final report. Washington DC: U.S. Department of Transportation.

MLA

Mace Douglas J, Garvey Philip M and Heckard Robert F. Relative visibility of increased legend size vs. brighter materials for traffic signs. Final report. Washington DC: U.S. Department of Transportation. 1994.