Horwood, M. P. (1921). Public health surveys: What they are, how to make them, how to use them. John Wiley & sons, inc.; [etc., etc.].
Chicago-referens (17:e uppl.)Horwood, Murray Philip. Public Health Surveys: What They Are, How to Make Them, How to Use Them. New York: John Wiley & sons, inc.; [etc., etc.], 1921.
MLA-referens (8:e uppl.)Horwood, Murray Philip. Public Health Surveys: What They Are, How to Make Them, How to Use Them. John Wiley & sons, inc.; [etc., etc.], 1921.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.