Levin, H. M., & McEwan, P. J. (2001). Cost-effectiveness analysis: Methods and applications (2nd ed.). Thousand Oaks, CA.: Sage Publications, Inc..
Παραπομπή Chicago StyleLevin, Henry M., and Patrick J. McEwan. Cost-effectiveness Analysis: Methods and Applications. 2nd ed. Thousand Oaks, CA.: Sage Publications, Inc., 2001.
Παραπομπή MLALevin, Henry M., and Patrick J. McEwan. Cost-effectiveness Analysis: Methods and Applications. 2nd ed. Thousand Oaks, CA.: Sage Publications, Inc., 2001.
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