Gaya APA
Petts, R.C.. (1982).
PRACTICAL GUIDELINES FOR RURAL ROAD MAINTENANCE: Vol I Maintenance of Roadside Areas and Drainage .
Germany:
Piarc.
Gaya Chicago
Petts, R.C..
PRACTICAL GUIDELINES FOR RURAL ROAD MAINTENANCE: Vol I Maintenance of Roadside Areas and Drainage.
Germany:
Piarc,
1982.
Text.
Gaya MLA
Petts, R.C..
PRACTICAL GUIDELINES FOR RURAL ROAD MAINTENANCE: Vol I Maintenance of Roadside Areas and Drainage.
Germany:
Piarc,
1982.
Text.
Gaya Turabian
Petts, R.C..
PRACTICAL GUIDELINES FOR RURAL ROAD MAINTENANCE: Vol I Maintenance of Roadside Areas and Drainage.
Germany:
Piarc,
1982.
Print.