Gaya APA
Fundramentalls of ecology. (1971).
Tokyo:
toppan company.
Gaya Chicago
Fundramentalls of ecology.
.
Tokyo:
toppan company,
1971.
Buku.
Gaya MLA
Fundramentalls of ecology.
.
Tokyo:
toppan company,
1971.
Buku.
Gaya Turabian
Fundramentalls of ecology.
Tokyo:
toppan company,
1971.
Buku.