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Dyfyniad Arddull ChicagoQuinn, G., and P. Martin. From Brady to Murphy: Gun Control Polarization in the Decades Since the 103rd Congress. 2019.
Dyfyniad MLAQuinn, G., and P. Martin. From Brady to Murphy: Gun Control Polarization in the Decades Since the 103rd Congress. 2019.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.