Não informado. (1971). NCSDHA dental hygienist. Northern Californis State Dental Hygienists.
Style de citation Chicago (17e éd.)Não informado. NCSDHA Dental Hygienist. San Francisco, Calif: Northern Californis State Dental Hygienists, 1971.
Style de citation MLA (8e éd.)Não informado. NCSDHA Dental Hygienist. Northern Californis State Dental Hygienists, 1971.
Attention : ces citations peuvent ne pas être correctes à 100%.