APA (7th ed.) Zitazioa
HADDOCK, C., & ET AL. (1999). SMOKING PREVALENCE AND RISK FACTORS FOR SMOKING IN A POPULATION OF UNITED STATES AIR FORCE BASIC TRAINEES.
Chicago Style (17th ed.) Zitazioa
HADDOCK, C.K, eta ET AL. SMOKING PREVALENCE AND RISK FACTORS FOR SMOKING IN A POPULATION OF UNITED STATES AIR FORCE BASIC TRAINEES. 1999.
MLA (9th ed.) Zitazioa
HADDOCK, C.K, eta ET AL. SMOKING PREVALENCE AND RISK FACTORS FOR SMOKING IN A POPULATION OF UNITED STATES AIR FORCE BASIC TRAINEES. 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.