Hartu hau. : Advances in group processes / edited by Shane R. Thye, Edward J. Lawler ; contributors, Joseph Berger [and thirty others].

Izenburua : Advances in group processes / edited by Shane R. Thye, Edward J. Lawler ; contributors, Joseph Berger [and thirty others].

Sailkapena : Ez dago telefono-zenbakirik.

Egoera : Ezezaguna