APA aipamena

FREY, J. H. (1983). Survey Research By Telephone / James H. Frey. Sage.

Chicago Style aipamena

FREY, JAMES H. Survey Research By Telephone / James H. Frey. Sage, 1983.

MLA aipamena

FREY, JAMES H. Survey Research By Telephone / James H. Frey. Sage, 1983.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.