Griffiths, J. S., Stokes, M. R., & Thomas, R. G. (1999). Landslides: Proceedings of the ninth international conference and field trip on landslides/Bristol/United Kingtom/5-16 September 1999. Rotterdam: A. A. Balkema.
Παραπομπή Chicago StyleGriffiths, James S., Martin R. Stokes, and Robert G. Thomas. Landslides: Proceedings of the Ninth International Conference and Field Trip On Landslides/Bristol/United Kingtom/5-16 September 1999. Rotterdam: A. A. Balkema, 1999.
Παραπομπή MLAGriffiths, James S., Martin R. Stokes, and Robert G. Thomas. Landslides: Proceedings of the Ninth International Conference and Field Trip On Landslides/Bristol/United Kingtom/5-16 September 1999. Rotterdam: A. A. Balkema, 1999.
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