Gaya APA
Keith, Lawrence H.. (1988).
Principles of environmental sampling .
USA:
ACS Professional Reference Book.
Gaya Chicago
Keith, Lawrence H..
Principles of environmental sampling.
USA:
ACS Professional Reference Book,
1988.
Text.
Gaya MLA
Keith, Lawrence H..
Principles of environmental sampling.
USA:
ACS Professional Reference Book,
1988.
Text.
Gaya Turabian
Keith, Lawrence H..
Principles of environmental sampling.
USA:
ACS Professional Reference Book,
1988.
Print.