Gaya APA
Skinner, Brian J.. (1976).
Earth resources / Brian J. Skinner .
:
Englewood Cliffs : Prentice-Hall.
Gaya Chicago
Skinner, Brian J..
Earth resources / Brian J. Skinner.
:
Englewood Cliffs : Prentice-Hall,
1976.
Buku.
Gaya MLA
Skinner, Brian J..
Earth resources / Brian J. Skinner.
:
Englewood Cliffs : Prentice-Hall,
1976.
Buku.
Gaya Turabian
Skinner, Brian J..
Earth resources / Brian J. Skinner.
:
Englewood Cliffs : Prentice-Hall,
1976.
Buku.