Wilson, S., & Nutt, D. J. (2008). Sleep disorders. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Wilson, Sue, agus David J. Nutt. Sleep Disorders. Oxford ; New York: Oxford University Press, 2008.
Lua MLA (9ú heag.)Wilson, Sue, agus David J. Nutt. Sleep Disorders. Oxford University Press, 2008.
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