APA aipamena

Bohrer, S. P. (1978). Lung cancer risk in pipe and cigar smokers.

Chicago Style aipamena

Bohrer, S P. Lung Cancer Risk in Pipe and Cigar Smokers. 1978.

MLA aipamena

Bohrer, S P. Lung Cancer Risk in Pipe and Cigar Smokers. 1978.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.