APA Style
Porritt, Jonathan. (1991).
Save the Earth .
London:
Dorling Kindersley.
Chicago Style
Porritt, Jonathan.
Save the Earth.
London:
Dorling Kindersley,
1991.
Buku.
MLA Style
Porritt, Jonathan.
Save the Earth.
London:
Dorling Kindersley,
1991.
Buku.
Turabian Style
Porritt, Jonathan.
Save the Earth.
London:
Dorling Kindersley,
1991.
Buku.