Eller, P. M., & Cassinelli, M. E. (1994). NIOSH manual of analytical methods (4th ed.). Cincinnati, OH.: Department of Health and Human Services.
Παραπομπή Chicago StyleEller, Peter M., and Mary Ellen Cassinelli. NIOSH Manual of Analytical Methods. 4th ed. Cincinnati, OH.: Department of Health and Human Services, 1994.
Παραπομπή MLAEller, Peter M., and Mary Ellen Cassinelli. NIOSH Manual of Analytical Methods. 4th ed. Cincinnati, OH.: Department of Health and Human Services, 1994.
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