Gaya APA
PIMENTEL, G, C., Spratley, R, D.
(1971).
UNDERSTANDING CHEMISTRY
.
San Francisco:
Holden-day.
Gaya MLA
PIMENTEL, George, C.., Spratley, Richard, D..
"UNDERSTANDING CHEMISTRY".
San Francisco:
Holden-day,
1971.
Textbook.