New York University. Division of General Education. Center for Safety Education. (1967). Driver education and traffic safety (7th ed.). Prentice Hall.
Cita Chicago (17th ed.)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.
Cita MLA (9th ed.)New York University. Division of General Education. Center for Safety Education. Driver Education and Traffic Safety. 7th ed. Prentice Hall, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.