Não informado. (1976). The Journal of the Western Society of Periodontology. Western Society of Periodontology.
Cita Chicago Style (17a ed.)Não informado. The Journal of the Western Society of Periodontology. Los Angeles, Calif: Western Society of Periodontology, 1976.
Cita MLA (8a ed.)Não informado. The Journal of the Western Society of Periodontology. Western Society of Periodontology, 1976.
Precaución: Estas citas no son 100% exactas.