APA

Lu D., Lytton R. & Michalak C. (1975). Optimal flexible pavement cross-section design using quantity-discount cost model. College Station, TX: Texas A&M University. Texas Transportation Institute. RR nr 123-28.

Chicago

Lu DY, Lytton RL and Michalak CH. 1975. Optimal flexible pavement cross-section design using quantity-discount cost model. College Station, TX: Texas A&M University. Texas Transportation Institute. RR nr 123-28.

Harvard

Lu D., Lytton R. and Michalak C. (1975). Optimal flexible pavement cross-section design using quantity-discount cost model. College Station, TX: Texas A&M University. Texas Transportation Institute. RR nr 123-28.

MLA

Lu DY, Lytton RL and Michalak CH. Optimal flexible pavement cross-section design using quantity-discount cost model. College Station, TX: Texas A&M University. Texas Transportation Institute. RR nr 123-28. 1975.