APA引文

Clarke, V., White, V., Beckwith, J., Borland, R., & Hill, D. (1993). Are attitudes towards smoking different for males and females? BMJ Group.

Citação norma Chicago

Clarke, V., V. White, J. Beckwith, R. Borland, and D. Hill. Are Attitudes Towards Smoking Different for Males and Females? BMJ Group, 1993.

MLA引文

Clarke, V., et al. Are Attitudes Towards Smoking Different for Males and Females? BMJ Group, 1993.