Gaya APA
DKK, R, C, S.
(1990).
MERRIL CHEMISTRY A MODERN COURSE
(
1)
.
OHIO:
Merril Publishing Company.
Gaya MLA
DKK, ROBERT, C., SMOOT.
"MERRIL CHEMISTRY A MODERN COURSE".
1
OHIO:
Merril Publishing Company,
1990.
Text.