Le Maitre, R. W. et al.: Igneous rocks : a classification and glossary of terms : recommendations of the International Union of Geological Sciences, Subcommission on the Systematics of Igneous Rocks. Cambridge, U.K.: Cambridge University Press, 2002. ISBN 9780511535581Teoksen verkkoversio.
doi.org
dx.doi.org
S.F. Foley, G. Venturelli, D.H. Green, L. Toscani: The ultrapotassic rocks: Characteristics, classification, and constraints for petrogenetic models. Earth-Science Reviews, 1987-04, 24. vsk, nro 2, s. 81–134. doi:10.1016/0012-8252(87)90001-8ISSN 0012-8252Artikkelin verkkoversio.
elsevier.com
linkinghub.elsevier.com
S.F. Foley, G. Venturelli, D.H. Green, L. Toscani: The ultrapotassic rocks: Characteristics, classification, and constraints for petrogenetic models. Earth-Science Reviews, 1987-04, 24. vsk, nro 2, s. 81–134. doi:10.1016/0012-8252(87)90001-8ISSN 0012-8252Artikkelin verkkoversio.
S.F. Foley, G. Venturelli, D.H. Green, L. Toscani: The ultrapotassic rocks: Characteristics, classification, and constraints for petrogenetic models. Earth-Science Reviews, 1987-04, 24. vsk, nro 2, s. 81–134. doi:10.1016/0012-8252(87)90001-8ISSN 0012-8252Artikkelin verkkoversio.