Παραπομπή APA

Brabb, E. E., & Harrod, B. L. (1989). Landslides: Extent and economic significance: proceedings of the 28th International Geological Congress. Rotterdam ; Brookfield, VT: A.A. Balkema.

Παραπομπή Chicago Style

Brabb, Earl E., and Betty L. Harrod. Landslides: Extent and Economic Significance: Proceedings of the 28th International Geological Congress. Rotterdam ; Brookfield, VT: A.A. Balkema, 1989.

Παραπομπή MLA

Brabb, Earl E., and Betty L. Harrod. Landslides: Extent and Economic Significance: Proceedings of the 28th International Geological Congress. Rotterdam ; Brookfield, VT: A.A. Balkema, 1989.

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