APA

Hirsch T., Post E. & Hayes G. (1972). Vehicle crash test and evaluation of median barriers for Texas highways. College Station, TX: Texas A&M University. Texas Transportation Institute. RR nr 146-4.

Chicago

Hirsch TJ, Post ER and Hayes GG. 1972. Vehicle crash test and evaluation of median barriers for Texas highways. College Station, TX: Texas A&M University. Texas Transportation Institute. RR nr 146-4.

Harvard

Hirsch T., Post E. and Hayes G. (1972). Vehicle crash test and evaluation of median barriers for Texas highways. College Station, TX: Texas A&M University. Texas Transportation Institute. RR nr 146-4.

MLA

Hirsch TJ, Post ER and Hayes GG. Vehicle crash test and evaluation of median barriers for Texas highways. College Station, TX: Texas A&M University. Texas Transportation Institute. RR nr 146-4. 1972.