APA (7th ed.) Citation

Zinn, C. J., & Willis, E. E. (1965). How our Laws are Made. United States Government Printing Office.

Chicago Style (17th ed.) Citation

Zinn, Charles J., and E. E. Willis. How Our Laws Are Made. Washington: United States Government Printing Office, 1965.

MLA (9th ed.) Citation

Zinn, Charles J., and E. E. Willis. How Our Laws Are Made. United States Government Printing Office, 1965.