Gaya APA
}, C., W., {., E., A. (2017).
Principles of Environmental Science Inquiry and Application (Eight h Edition).
New York:
Mc Graw Hill Education.
Gaya MLA
}, C., W., {., E., A..
Principles of Environmental Science Inquiry and Application.
Eight h Edition
New York:
Mc Graw Hill Education,
2017.
Text.