Gaya APA
Greenland, David. (1983).
Guidelines for modern resource management: soil, land, water, air .
Colombus:
Charles E. Merill.
Gaya Chicago
Greenland, David.
Guidelines for modern resource management: soil, land, water, air.
Colombus:
Charles E. Merill,
1983.
Text.
Gaya MLA
Greenland, David.
Guidelines for modern resource management: soil, land, water, air.
Colombus:
Charles E. Merill,
1983.
Text.
Gaya Turabian
Greenland, David.
Guidelines for modern resource management: soil, land, water, air.
Colombus:
Charles E. Merill,
1983.
Print.