APA

Hirsch T., Marquis E., . (1975). Crash test and evaluation of a precast concrete median barrier. College Station, TX: Texas A&M University. Texas Transportation Institute. RR nr 223-1.

Chicago

Hirsch TJ, Marquis EL, . 1975. Crash test and evaluation of a precast concrete median barrier. College Station, TX: Texas A&M University. Texas Transportation Institute. RR nr 223-1.

Harvard

Hirsch T., Marquis E., . (1975). Crash test and evaluation of a precast concrete median barrier. College Station, TX: Texas A&M University. Texas Transportation Institute. RR nr 223-1.

MLA

Hirsch TJ, Marquis EL, . Crash test and evaluation of a precast concrete median barrier. College Station, TX: Texas A&M University. Texas Transportation Institute. RR nr 223-1. 1975.