Gaya APA
Clay, David, Pierce, Francis J.. (2007).
Gis applications in agriculture .
New York:
CRC Press.
Gaya Chicago
Clay, David, Pierce, Francis J..
Gis applications in agriculture.
New York:
CRC Press,
2007.
E-BOOK.
Gaya MLA
Clay, David, Pierce, Francis J..
Gis applications in agriculture.
New York:
CRC Press,
2007.
E-BOOK.
Gaya Turabian
Clay, David, Pierce, Francis J..
Gis applications in agriculture.
New York:
CRC Press,
2007.
E-BOOK.