Cite
Use of sinus x ray films by general practitioners.
MLA
Houghton, D. J., et al. “Use of Sinus x Ray Films by General Practitioners.” BMJ: British Medical Journal (International Edition), vol. 308, no. 6944, June 1994, p. 1608. EBSCOhost, widgets.ebscohost.com/prod/customlink/proxify/proxify.php?count=1&encode=0&proxy=&find_1=&replace_1=&target=https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=asx&AN=4946373&authtype=sso&custid=ns315887.
APA
Houghton, D. J., Aitchison, F. A., & Wilkinson, L. (1994). Use of sinus x ray films by general practitioners. BMJ: British Medical Journal (International Edition), 308(6944), 1608.
Chicago
Houghton, D.J., F.A. Aitchison, and L. Wilkinson. 1994. “Use of Sinus x Ray Films by General Practitioners.” BMJ: British Medical Journal (International Edition) 308 (6944): 1608. http://widgets.ebscohost.com/prod/customlink/proxify/proxify.php?count=1&encode=0&proxy=&find_1=&replace_1=&target=https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=asx&AN=4946373&authtype=sso&custid=ns315887.