Gaya APA
Alloway, B., Ayres, D. (1993).
Chemical Principles Of Environmental Polution .
Melnborne:
Blackie Academc & Professonl.
Gaya MLA
Alloway, B.J.., Ayres, D.C..
"Chemical Principles Of Environmental Polution".
Melnborne:
Blackie Academc & Professonl,
1993.
Text.