Berk, R. (1974). Collective behaviour. W.M.C Brown Company.
Chicagoスタイル(17版)引用形式Berk, Richard. Collective Behaviour. NULL: W.M.C Brown Company, 1974.
MLA(9版)引用形式Berk, Richard. Collective Behaviour. W.M.C Brown Company, 1974.
警告: この引用は必ずしも正確ではありません.