Cita APA (7a ed.)

Duffin, A. T. (2010). History in blue: 160 years of women police, sheriffs, detectives and state troopers. Kaplan Publ.

Cita Chicago Style (17a ed.)

Duffin, Allan T. History in Blue: 160 Years of Women Police, Sheriffs, Detectives and State Troopers. New York: Kaplan Publ, 2010.

Cita MLA (9a ed.)

Duffin, Allan T. History in Blue: 160 Years of Women Police, Sheriffs, Detectives and State Troopers. Kaplan Publ, 2010.