Primary Source Microfilm (Firm). (2007). International population census publication. Primary Source Microfilm.
Chicago-referens (17:e uppl.)Primary Source Microfilm (Firm). International Population Census Publication. Woodbridge, CT: Primary Source Microfilm, 2007.
MLA-referens (8:e uppl.)Primary Source Microfilm (Firm). International Population Census Publication. Primary Source Microfilm, 2007.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.