O'Neill, T., Marsden, D., Matthis, C., Raspe, H., & Silman, A. (1995). Survey response rates: National and regional differences in a European multicentre study of vertebral osteoporosis.
Citace podle Chicago (17th ed.)O'Neill, T., D. Marsden, C. Matthis, H. Raspe, a A. Silman. Survey Response Rates: National and Regional Differences in a European Multicentre Study of Vertebral Osteoporosis. 1995.
Citace podle MLA (9th ed.)O'Neill, T., et al. Survey Response Rates: National and Regional Differences in a European Multicentre Study of Vertebral Osteoporosis. 1995.
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