Gaya APA
Simmons, I.G.. (1981).
The Ecology of natural resources / I.G. Simmons (2nd ed.).
London:
The English Language Book Society and Edward Arnold.
Gaya Chicago
Simmons, I.G..
The Ecology of natural resources / I.G. Simmons.
2nd ed.
London:
The English Language Book Society and Edward Arnold,
1981.
Text.
Gaya MLA
Simmons, I.G..
The Ecology of natural resources / I.G. Simmons.
2nd ed.
London:
The English Language Book Society and Edward Arnold,
1981.
Text.
Gaya Turabian
Simmons, I.G..
The Ecology of natural resources / I.G. Simmons.
2nd ed.
London:
The English Language Book Society and Edward Arnold,
1981.
Print.