Cita APA

Survey Research Consultants International, Hastings, E. H., & Hastings, P. K. (1999). Index to international public opinion, 1997-1998. Greenwood Press.

Citación estilo Chicago

Survey Research Consultants International, Elizabeth Hann Hastings, and Philip K. Hastings. Index to International Public Opinion, 1997-1998. Westport, Conn: Greenwood Press, 1999.

Cita MLA

Survey Research Consultants International, et al. Index to International Public Opinion, 1997-1998. Greenwood Press, 1999.