Cita APA (7th ed.)
HUGHES, J., & ET AL. (1999). ABILITY OF SMOKERS TO REDUCE THEIR SMOKING AND ITS ASSOCIATION WITH FUTURE SMOKING CESSATION.
Cita Chicago (17th ed.)
HUGHES, J.R, i ET AL. ABILITY OF SMOKERS TO REDUCE THEIR SMOKING AND ITS ASSOCIATION WITH FUTURE SMOKING CESSATION. 1999.
Cita MLA (9th ed.)
HUGHES, J.R, i ET AL. ABILITY OF SMOKERS TO REDUCE THEIR SMOKING AND ITS ASSOCIATION WITH FUTURE SMOKING CESSATION. 1999.
Atenció: Aquestes cites poden no estar 100% correctes.