APA aipamena

Crofton, J. (1990). The Seventh World Conference on Tobacco and Health.

Chicago Style aipamena

Crofton, J. The Seventh World Conference On Tobacco and Health. 1990.

MLA aipamena

Crofton, J. The Seventh World Conference On Tobacco and Health. 1990.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.