APA-referens (7:e uppl.)

Friedman, L. M. (2002). American law in the 20th century. Yale University.

Chicago-referens (17:e uppl.)

Friedman, Lawrence M. American Law in the 20th Century. New Haven: Yale University, 2002.

MLA-referens (9:e uppl.)

Friedman, Lawrence M. American Law in the 20th Century. Yale University, 2002.