Gaya APA
Environmen of Life. (1973).
California:
Dickenson Publishing.
Gaya Chicago
Environmen of Life.
cet.9.
California:
Dickenson Publishing,
1973.
.
Gaya MLA
Environmen of Life.
cet.9.
California:
Dickenson Publishing,
1973.
.
Gaya Turabian
Environmen of Life.
California:
Dickenson Publishing,
1973.
.