SIGURDSSON, H., & SPARKS, R. S. J. (1981). Petrology of Rhyolitic and Mixed Magma Ejecta from the 1875 Eruption of Askja, Iceland. Journal of Petrology, 22(1), 41.
Chicago Style (17th ed.) CitationSIGURDSSON, H., and R. S. J. SPARKS. "Petrology of Rhyolitic and Mixed Magma Ejecta from the 1875 Eruption of Askja, Iceland." Journal of Petrology 22, no. 1 (1981): 41.
MLA (9th ed.) CitationSIGURDSSON, H., and R. S. J. SPARKS. "Petrology of Rhyolitic and Mixed Magma Ejecta from the 1875 Eruption of Askja, Iceland." Journal of Petrology, vol. 22, no. 1, 1981, p. 41.
Warning: These citations may not always be 100% accurate.