Gaya APA
Donahue, Roy L.. (1977).
Soils : an introduction to soils and plant growth .
New Jersey:
Prentice-Hall.
Gaya Chicago
Donahue, Roy L..
Soils : an introduction to soils and plant growth.
New Jersey:
Prentice-Hall,
1977.
Tesis.
Gaya MLA
Donahue, Roy L..
Soils : an introduction to soils and plant growth.
New Jersey:
Prentice-Hall,
1977.
Tesis.
Gaya Turabian
Donahue, Roy L..
Soils : an introduction to soils and plant growth.
New Jersey:
Prentice-Hall,
1977.
Tesis.