APA Style
Cunningham, William Cunningham, William P.. (2007).
Environmental science : a global concern.-- .
America:
McGraw-Hill.
Chicago Style
Cunningham, William Cunningham, William P..
Environmental science : a global concern.--.
America:
McGraw-Hill,
2007.
Buku.
MLA Style
Cunningham, William Cunningham, William P..
Environmental science : a global concern.--.
America:
McGraw-Hill,
2007.
Buku.
Turabian Style
Cunningham, William Cunningham, William P..
Environmental science : a global concern.--.
America:
McGraw-Hill,
2007.
Buku.