Gappo, P. (2014). Nullification: How to Resist Federal Tyranny in the 21st Century. Thomas E. Woods, Jr. Washington, DC: Regnery Publishing, 2010. (309 páginas) ISBN: 978-1-59698-149-2. Instituto Mises Brasil.
Chicago-Zitierstil (17. Ausg.)Gappo, Patrick. Nullification: How to Resist Federal Tyranny in the 21st Century. Thomas E. Woods, Jr. Washington, DC: Regnery Publishing, 2010. (309 Páginas) ISBN: 978-1-59698-149-2. Instituto Mises Brasil, 2014.
MLA-Zitierstil (9. Ausg.)Gappo, Patrick. Nullification: How to Resist Federal Tyranny in the 21st Century. Thomas E. Woods, Jr. Washington, DC: Regnery Publishing, 2010. (309 Páginas) ISBN: 978-1-59698-149-2. Instituto Mises Brasil, 2014.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.