Valkenburg, H. A., Ball, J., Burch, T. A., Bennett, P. H., & Lawrence, J. S. (1966). Rheumatoid factors in a rural population. BMJ Group.
Chicago Style CitationValkenburg, H. A., J. Ball, T. A. Burch, P. H. Bennett, and J. S. Lawrence. Rheumatoid Factors in a Rural Population. BMJ Group, 1966.
MLA CitationValkenburg, H. A., et al. Rheumatoid Factors in a Rural Population. BMJ Group, 1966.
Warning: These citations may not always be 100% accurate.