Gaya APA
Harris, Frances. (2004).
Global Environmental Issues .
England:
John Wiley & Sons Ltd..
Gaya Chicago
Harris, Frances.
Global Environmental Issues.
England:
John Wiley & Sons Ltd.,
2004.
ML.
Gaya MLA
Harris, Frances.
Global Environmental Issues.
England:
John Wiley & Sons Ltd.,
2004.
ML.
Gaya Turabian
Harris, Frances.
Global Environmental Issues.
England:
John Wiley & Sons Ltd.,
2004.
ML.