Dyfyniad APA

American Public Health Association & Heyman, D. L. (2008). Control of communicable diseases manual (19th ed.). American Public Health Association.

Dyfyniad Arddull Chicago

American Public Health Association and David L. Heyman. Control of Communicable Diseases Manual. 19th ed. Washington, DC: American Public Health Association, 2008.

Dyfyniad MLA

American Public Health Association and David L. Heyman. Control of Communicable Diseases Manual. 19th ed. American Public Health Association, 2008.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.