APA citiranje

Petersen, L. R., Helgerson, S. D., Gibbons, C. M., Calhoun, C. R., Ciacco, K. H., & Pitchford, K. C. (1988). Employee smoking behavior changes and attitudes following a restrictive policy on worksite smoking in a large company.

Citação norma Chicago

Petersen, L R., S D. Helgerson, C M. Gibbons, C R. Calhoun, K H. Ciacco, and K C. Pitchford. Employee Smoking Behavior Changes and Attitudes Following a Restrictive Policy On Worksite Smoking in a Large Company. 1988.

MLA citiranje

Petersen, L R., et al. Employee Smoking Behavior Changes and Attitudes Following a Restrictive Policy On Worksite Smoking in a Large Company. 1988.