Gaya APA
Dubisch, R., Hood, V, R. (1979).
Basic Mathematics with Hand-Held Calculator : A Work-Text .
California:
The Benjamin Publishng.
Gaya MLA
Dubisch, Roy., Hood, Vernon, R..
"Basic Mathematics with Hand-Held Calculator : A Work-Text".
California:
The Benjamin Publishng,
1979.
Text.