APA Citatie

Pierce, J. P., Shanks, T. G., Pertschuk, M., Gilpin, E., Shopland, D., Johnson, M., & Bal, D. (1994). Do smoking ordinances protect non-smokers from environmental tobacco smoke at work? BMJ Group.

Chicago Style citaat

Pierce, J. P., T. G. Shanks, M. Pertschuk, E. Gilpin, D. Shopland, M. Johnson, en D. Bal. Do Smoking Ordinances Protect Non-smokers From Environmental Tobacco Smoke At Work? BMJ Group, 1994.

MLA citatie

Pierce, J. P., et al. Do Smoking Ordinances Protect Non-smokers From Environmental Tobacco Smoke At Work? BMJ Group, 1994.