Gaya APA
PETRUCCI, R, H. (1985).
GENERAL CHEMISTRY: PRINCIPLES AND MODERN APPLICATIONS (Fourth Edition).
New York:
The Machmillan.
Gaya MLA
PETRUCCI, Ralph, H.
"GENERAL CHEMISTRY: PRINCIPLES AND MODERN APPLICATIONS".
Fourth Edition
New York:
The Machmillan,
1985.
Textbook.