Dyfyniad APA

ebrary, Inc, Luyn, J. B. v., Akhtar, S., & Livesley, W. J. (2007). Severe personality disorders. Cambridge University Press.

Dyfyniad Arddull Chicago

ebrary, Inc, J. B. van Luyn, Salman Akhtar, and W. John Livesley. Severe Personality Disorders. Cambridge ; New York: Cambridge University Press, 2007.

Dyfyniad MLA

ebrary, Inc, et al. Severe Personality Disorders. Cambridge University Press, 2007.

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