Catalog

توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Tilling, R. I. (1984). Eruptions of Mount St. Helens: Past, present, and future. Dept. of the Interior, U.S. Geological Survey ; For sale by the Supt. of Docs., U.S. G.P.O..

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Tilling, Robert I. Eruptions of Mount St. Helens: Past, Present, and Future. [Reston, Va.?] : Washington, D.C.: Dept. of the Interior, U.S. Geological Survey ; For sale by the Supt. of Docs., U.S. G.P.O., 1984.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Tilling, Robert I. Eruptions of Mount St. Helens: Past, Present, and Future. Dept. of the Interior, U.S. Geological Survey ; For sale by the Supt. of Docs., U.S. G.P.O., 1984.