Gaya APA
Progress in Resource Management and Environmental Planning. (1981).
USA:
John Wiley.
Gaya Chicago
Progress in Resource Management and Environmental Planning.
.
USA:
John Wiley,
1981.
.
Gaya MLA
Progress in Resource Management and Environmental Planning.
.
USA:
John Wiley,
1981.
.
Gaya Turabian
Progress in Resource Management and Environmental Planning.
USA:
John Wiley,
1981.
.