DAWSON, B., & TRAPP, R. G. (2003). Basic and clinical biostatistics.-- Ed.3. Lange Medical Books/McGraw Hill.

DAWSON, Beth, and Robert G. TRAPP. Basic and Clinical Biostatistics.-- Ed.3. Boston: Lange Medical Books/McGraw Hill, 2003.

DAWSON, Beth, and Robert G. TRAPP. Basic and Clinical Biostatistics.-- Ed.3. Lange Medical Books/McGraw Hill, 2003.