Cita APA (7a ed.)
Harper, D. V. (1982). Transportation in America: Users, Carriers, Government (2. ed.). Prentice Hall.
Cita Chicago Style (17a ed.)
Harper, Donald V. Transportation in America: Users, Carriers, Government. 2. ed. Englewood Cliffs: Prentice Hall, 1982.
Cita MLA (9a ed.)
Harper, Donald V. Transportation in America: Users, Carriers, Government. 2. ed. Prentice Hall, 1982.
Precaución: Estas citas no son 100% exactas.