Citazione Stile APA (7a Edizione)

Bigham, T. C., & Roberts, M. J. (1952). Transportation: Principles and problems (2nd ed.). McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Bigham, Truman C., e Merrill J. Roberts. Transportation: Principles and Problems. 2nd ed. New York: McGraw-Hill, 1952.

Citatione MLA (9a ed.)

Bigham, Truman C., e Merrill J. Roberts. Transportation: Principles and Problems. 2nd ed. McGraw-Hill, 1952.