Ratliff, Thomas (2014). "Practicing the Art of Dissent: Toward a Typology of Protest Activity in the United States". Humanity & Science. 38 (3): 268–294. doi:10.1177/0160597614537796. S2CID147285566.
Ratliff, Thomas (2014). "Practicing the Art of Dissent: Toward a Typology of Protest Activity in the United States". Humanity & Science. 38 (3): 268–294. doi:10.1177/0160597614537796. S2CID147285566.