Gaya APA
Masters,Gilbert m. (1991).
Introduction to environmental engineering and science .
Singapore:
Prentice-Hall.
Gaya Chicago
Masters,Gilbert m.
Introduction to environmental engineering and science.
Singapore:
Prentice-Hall,
1991.
Text.
Gaya MLA
Masters,Gilbert m.
Introduction to environmental engineering and science.
Singapore:
Prentice-Hall,
1991.
Text.
Gaya Turabian
Masters,Gilbert m.
Introduction to environmental engineering and science.
Singapore:
Prentice-Hall,
1991.
Print.