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Rindler W. Relativity: special, general, and cosmological. 2nd ed. Oxford: : Oxford University Press 2006. http://www.loc.gov/catdir/toc/fy0611/2006277893.html
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Choquet-Bruhat Y. Introduction to general relativity, black holes, and cosmology. First edition. Oxford: : Oxford University Press 2015. http://ezproxy.library.qmul.ac.uk/login?url=http://www.vlebooks.com/vleweb/product/openreader?id=QMUL&isbn=9780191644528&uid=^u