Putman,William H. (2010). Legal Research (2nd.). Cengage Learning.
Cita Chicago (17th ed.)Putman,William H. Legal Research. 2nd. Australia: Cengage Learning, 2010.
Cita MLA (9th ed.)Putman,William H. Legal Research. 2nd. Cengage Learning, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.