Gaya APA
Berry, B., J., Horton, F., E. (1974).
urban environmental menagement planning for pollution control .
NewJersey:
Prentice-Hall.
Gaya MLA
Berry, B., J., Horton, F., E..
urban environmental menagement planning for pollution control.
NewJersey:
Prentice-Hall,
1974.
Lawas.