1988. Online services: Reference manual. Part 15, PDQ (Physician Data Query). Bethesda: U.S. Department of Health and Human Services.
Citace podle APA (7th ed.)(1988). Online services: Reference manual. Part 15, PDQ (Physician Data Query). U.S. Department of Health and Human Services.
Citace podle Chicago (17th ed.)Online Services: Reference Manual. Part 15, PDQ (Physician Data Query). Bethesda: U.S. Department of Health and Human Services, 1988.
Citace podle MLA (9th ed.)Online Services: Reference Manual. Part 15, PDQ (Physician Data Query). U.S. Department of Health and Human Services, 1988.
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