Cita APA (7a ed.)

Doll, R. (1994). Mortality in relation to smoking: 40 years' observations on male British doctors. [s.n.].

Cita Chicago Style (17a ed.)

Doll, Richard. Mortality in Relation to Smoking: 40 Years' Observations on Male British Doctors. [S.l.]: [s.n.], 1994.

Cita MLA (9a ed.)

Doll, Richard. Mortality in Relation to Smoking: 40 Years' Observations on Male British Doctors. [s.n.], 1994.