Olson, K. C., & Berring, R. C. (1988). Practical approaches to legal research. Legal reference services quarterly.
Cita Chicago Style (17a ed.)Olson, Kent C., y Robert C. Berring. "Practical Approaches to Legal Research." Legal Reference Services Quarterly 1988.
Cita MLA (9a ed.)Olson, Kent C., y Robert C. Berring. "Practical Approaches to Legal Research." Legal Reference Services Quarterly, 1988.
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