APA aipamena

Wald, N. (1991). Directory of On-Going Research in Cancer Epidemiology. 1991.

Chicago Style aipamena

Wald, N. Directory of On-Going Research in Cancer Epidemiology. 1991. 1991.

MLA aipamena

Wald, N. Directory of On-Going Research in Cancer Epidemiology. 1991. 1991.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.