Sullivan, J. L. (1966). Introduction to police science. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Sullivan, John L. Introduction to Police Science. New York: McGraw-Hill, 1966.
Lua MLA (9ú heag.)Sullivan, John L. Introduction to Police Science. McGraw-Hill, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.