Citazione APA

Primary Source Microfilm (Firm) & Gale Group. (1970). International population census publication. Primary Source Microfilm an imprint of the Gale Group.

Stile di citazione Chicago

Primary Source Microfilm (Firm) e Gale Group. International Population Census Publication. [Woodbridge, Conn.]: Primary Source Microfilm an imprint of the Gale Group, 1970.

Citazione MLA

Primary Source Microfilm (Firm) e Gale Group. International Population Census Publication. Primary Source Microfilm an imprint of the Gale Group, 1970.