APA (7th ed.) Zitazioa
Sing,Gurucharan, & Sing, J. (2008). Highway Engineering (5th ed.). Standard Publishers.
Chicago Style (17th ed.) Zitazioa
Sing,Gurucharan, eta Jagdish Sing. Highway Engineering. 5th ed. Delhi: Standard Publishers, 2008.
MLA (9th ed.) Zitazioa
Sing,Gurucharan, eta Jagdish Sing. Highway Engineering. 5th ed. Standard Publishers, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.