Williams, J. F. (1928). Personal hygiene applied (3d ed., reset.). W.B. Saunders company.
Lua i Stíl Chicago (17ú heag.)Williams, Jesse Feiring. Personal Hygiene Applied. 3d ed., reset. Philadelphia ; London: W.B. Saunders company, 1928.
Lua MLA (8ú heag.)Williams, Jesse Feiring. Personal Hygiene Applied. 3d ed., reset. W.B. Saunders company, 1928.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.