Cita APA (7a ed.)

National Sheriffs' Association, Delahunt, R. R., Engler, R. D., & Gay, W. G. (1977). Contract law enforcement: A practical guide to program development.

Cita Chicago Style (17a ed.)

National Sheriffs' Association, Robert R. Delahunt, Richard D. Engler, y William G. Gay. Contract Law Enforcement: A Practical Guide to Program Development. s.l, 1977.

Cita MLA (8a ed.)

National Sheriffs' Association, et al. Contract Law Enforcement: A Practical Guide to Program Development. 1977.