APA (7th ed.) Zitazioa

(1981). Mount St. Helens ash and mud: Chemical properties and effects on germination and establishment of trees and wildlife browse plants / M.A. Radwan and Dan L. Campbell.

Chicago Style (17th ed.) Zitazioa

Mount St. Helens Ash and Mud: Chemical Properties and Effects on Germination and Establishment of Trees and Wildlife Browse Plants / M.A. Radwan and Dan L. Campbell. 1981.

MLA (9th ed.) Zitazioa

Mount St. Helens Ash and Mud: Chemical Properties and Effects on Germination and Establishment of Trees and Wildlife Browse Plants / M.A. Radwan and Dan L. Campbell. 1981.