Gray, D. E. (2013). Doing research in the real world (3rd edition.). Sage Publications.
Chicago-referens (17:e uppl.)Gray, David E. Doing Research in the Real World. 3rd edition. Thousand Oaks, CA: Sage Publications, 2013.
MLA-referens (8:e uppl.)Gray, David E. Doing Research in the Real World. 3rd edition. Sage Publications, 2013.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.