Research Publications, inc, & Primary Source Microfilm (Firm). (1970). International population census publications. Research Publications.
Lua i Stíl Chicago (17ú heag.)Research Publications, inc, agus Primary Source Microfilm (Firm). International Population Census Publications. Woodbridge, Conn.: Research Publications, 1970.
Lua MLA (8ú heag.)Research Publications, inc, agus Primary Source Microfilm (Firm). International Population Census Publications. Research Publications, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.