APA aipamena

Chalder, T., Hotopf, M., Unwin, C., Hull, L., Ismail, K., David, A., & Wessely, S. (2001). Prevalence of Gulf war veterans who believe they have Gulf war syndrome: Questionnaire study. BMJ.

Chicago Style aipamena

Chalder, T., M. Hotopf, C. Unwin, L. Hull, K. Ismail, A. David, and S. Wessely. Prevalence of Gulf War Veterans Who Believe They Have Gulf War Syndrome: Questionnaire Study. BMJ, 2001.

MLA aipamena

Chalder, T., et al. Prevalence of Gulf War Veterans Who Believe They Have Gulf War Syndrome: Questionnaire Study. BMJ, 2001.