United States. Health Care Financing Administration. (1980). The International classification of diseases, 9th revision, clinical modification: ICD-9-CM. U.S. Dept. of Health and Human Services, Public Health Service, Health Care Financing Administration.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিUnited States. Health Care Financing Administration. The International Classification of Diseases, 9th Revision, Clinical Modification: ICD-9-CM. Washington, D.C: U.S. Dept. of Health and Human Services, Public Health Service, Health Care Financing Administration, 1980.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিUnited States. Health Care Financing Administration. The International Classification of Diseases, 9th Revision, Clinical Modification: ICD-9-CM. U.S. Dept. of Health and Human Services, Public Health Service, Health Care Financing Administration, 1980.