Tindall, Suzie C. (1990), Walker, H. Kenneth; Hall, W. Dallas; Hurst, J. Willis (eds.), "Level of Consciousness", Clinical Methods: The History, Physical, and Laboratory Examinations (3rd ed.), Boston: Butterworths, ISBN978-0-409-90077-4, PMID21250221, retrieved 2022-03-26
pubmed.ncbi.nlm.nih.gov
Tindall, Suzie C. (1990), Walker, H. Kenneth; Hall, W. Dallas; Hurst, J. Willis (eds.), "Level of Consciousness", Clinical Methods: The History, Physical, and Laboratory Examinations (3rd ed.), Boston: Butterworths, ISBN978-0-409-90077-4, PMID21250221, retrieved 2022-03-26