Gaya APA
UNDERWOOD, D.N, Webster. (1981).
Chemistry (5th ed).
Singapore:
Federal.
Gaya Chicago
UNDERWOOD, D.N, Webster.
Chemistry.
5th ed
Singapore:
Federal,
1981.
Monograf.
Gaya MLA
UNDERWOOD, D.N, Webster.
Chemistry.
5th ed
Singapore:
Federal,
1981.
Monograf.
Gaya Turabian
UNDERWOOD, D.N, Webster.
Chemistry.
5th ed
Singapore:
Federal,
1981.
Monograf.