Ravenel, M. P. (1932). Sanitary Law in Question and Answer.
Chicago-stil citatRavenel, Mazÿck P. Sanitary Law in Question and Answer. 1932.
MLA-referensRavenel, Mazÿck P. Sanitary Law in Question and Answer. 1932.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.