Gaya APA
Maus, Joost, Schieferli, Erick. (1989).
Environmental Problems In North- East Luzon .
Netherlands:
Leiden University.
Gaya Chicago
Maus, Joost, Schieferli, Erick.
Environmental Problems In North- East Luzon.
Netherlands:
Leiden University,
1989.
.
Gaya MLA
Maus, Joost, Schieferli, Erick.
Environmental Problems In North- East Luzon.
Netherlands:
Leiden University,
1989.
.
Gaya Turabian
Maus, Joost, Schieferli, Erick.
Environmental Problems In North- East Luzon.
Netherlands:
Leiden University,
1989.
.