Winner, W., & Casadevall, T. (1980). Fir (Abies sp.) leaves as thermometers during the major Mount St. Helens eruption: Cuticular melting from volcanic heat. In The 1980 Eruption of Mount St. Helens, Washington (pp. 315–320). U.S. Government Printing Office, Washington, DC: Geological Survey Professional Paper 1250.

Winner, William, and T. Casadevall. “Fir (Abies sp.) leaves as thermometers during the major Mount St. Helens eruption: Cuticular melting from volcanic heat.” In The 1980 Eruption of Mount St. Helens, Washington, 315–20. U.S. Government Printing Office, Washington, DC: Geological Survey Professional Paper 1250, 1980.

Winner W, Casadevall T. Fir (Abies sp.) leaves as thermometers during the major Mount St. Helens eruption: Cuticular melting from volcanic heat. In: The 1980 Eruption of Mount St Helens, Washington. U.S. Government Printing Office, Washington, DC: Geological Survey Professional Paper 1250; 1980. p. 315–20.

Winner, William, and T. Casadevall. “Fir (Abies sp.) leaves as thermometers during the major Mount St. Helens eruption: Cuticular melting from volcanic heat.” The 1980 Eruption of Mount St. Helens, Washington, Geological Survey Professional Paper 1250, 1980, pp. 315–20.

Winner W, Casadevall T. Fir (Abies sp.) leaves as thermometers during the major Mount St. Helens eruption: Cuticular melting from volcanic heat. The 1980 Eruption of Mount St Helens, Washington. U.S. Government Printing Office, Washington, DC: Geological Survey Professional Paper 1250; 1980. p. 315–320.