Gaya APA

Environmental field testing and analysis ready reference handbook / Donald A. Drum, Shari L. Bauman, Gershon J. Shugar. (2000). : New York : McGraw Hill.

Gaya MLA

Environmental field testing and analysis ready reference handbook / Donald A. Drum, Shari L. Bauman, Gershon J. Shugar. . : New York : McGraw Hill, 2000. Text.