APA استشهاد

Kyoji Sassa & Sassa, K. (2013). Landslides: Global risk preparedness. Springer.

استشهاد بنمط شيكاغو

Kyoji Sassa و Kyoji Sassa. Landslides: Global Risk Preparedness. Berlin ; New York: Springer, 2013.

MLA استشهاد

Kyoji Sassa و Kyoji Sassa. Landslides: Global Risk Preparedness. Springer, 2013.