Lyman, S. M. Social movements. New York University Press.
Cita Chicago Style (17a ed.)Lyman, Stanford M. Social Movements. New York (State): New York University Press.
Cita MLA (9a ed.)Lyman, Stanford M. Social Movements. New York University Press.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.