Não informado. (1971). NCSDHA dental hygienist. Northern Californis State Dental Hygienists.
Cita Chicago Style (17a ed.)Não informado. NCSDHA Dental Hygienist. San Francisco, Calif: Northern Californis State Dental Hygienists, 1971.
Cita MLA (8a ed.)Não informado. NCSDHA Dental Hygienist. Northern Californis State Dental Hygienists, 1971.
Precaución: Estas citas no son 100% exactas.