APA Style
Sources, C. (1958).
GHEM SOURCES INTERNATIONAL 2000 EDITION (1).
pendleton sout carolin:
chemical Sources internationa inc.
MLA Style
Sources, Chemieal.
"GHEM SOURCES INTERNATIONAL 2000 EDITION".
1
pendleton sout carolin:
chemical Sources internationa inc,
1958.
المصادر المراجع.