Gaya APA

Dale, V, H. et al (2005). Ecological Responses to the 1980 Eruption of Mount St. Helens (1st ed.). New York: Springer.

Gaya MLA

Dale, Virginia, H.. et al. "Ecological Responses to the 1980 Eruption of Mount St. Helens". 1st ed. New York: Springer, 2005. E Book.