NATO Advanced Study Institute "Tephra Studies as a Tool in Quaternary Research" Laugarvatn, Iceland, and Reykjavâik, Iceland, Self, S., & Sparks, R. S. J. (1981). Tephra studies: Proceedings of the NATO Advanced Study Institute "Tephra Studies as a Tool in Quaternary Research", held in Laugarvatn and Reykjavãik, Iceland, June 18-29, 1980. D. Reidel Pub. Co. NATO Scientific Affairs Division Sold and distributed in the U.S.A. and Canada by Kluwer Boston Inc.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)NATO Advanced Study Institute "Tephra Studies as a Tool in Quaternary Research" Laugarvatn, Iceland, and Reykjavâik, Iceland, S. Self, و R. S. J. Sparks. Tephra Studies: Proceedings of the NATO Advanced Study Institute "Tephra Studies as a Tool in Quaternary Research", Held in Laugarvatn and Reykjavãik, Iceland, June 18-29, 1980. Dordrecht, Holland, Boston, U.S.A., [Brussels], Hingham, MA: D. Reidel Pub. Co. NATO Scientific Affairs Division Sold and distributed in the U.S.A. and Canada by Kluwer Boston Inc, 1981.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)NATO Advanced Study Institute "Tephra Studies as a Tool in Quaternary Research" Laugarvatn, Iceland, and Reykjavâik, Iceland, et al. Tephra Studies: Proceedings of the NATO Advanced Study Institute "Tephra Studies as a Tool in Quaternary Research", Held in Laugarvatn and Reykjavãik, Iceland, June 18-29, 1980. D. Reidel Pub. Co. NATO Scientific Affairs Division Sold and distributed in the U.S.A. and Canada by Kluwer Boston Inc, 1981.