New York University. Division of General Education. Center for Safety Education. (1967). Driver education and traffic safety (7th ed.). Prentice Hall.
Lua i Stíl Chicago (17ú heag.)New York University. Division of General Education. Center for Safety Education. Driver Education and Traffic Safety. 7th ed. Englewood Cliffs, N.J: Prentice Hall, 1967.
Lua MLA (9ú heag.)New York University. Division of General Education. Center for Safety Education. Driver Education and Traffic Safety. 7th ed. Prentice Hall, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.