Gaya APA
Washington, A, J. et al (1981).
Essentials of Basic Mathematics, Third Edition (3rd Ed.).
Wangshinton:
The Benjamin/Cummings Publishing Company.
Gaya MLA
Washington, Allyn, J. et al.
"Essentials of Basic Mathematics, Third Edition".
3rd Ed.
Wangshinton:
The Benjamin/Cummings Publishing Company,
1981.
Text.