Gaya APA
JOHNSTON, C. L. (1984).
Essential arithmetic (Fourth ed).
California:
Wadswoth Publishig Company.
Gaya Chicago
JOHNSTON, C. L.
Essential arithmetic.
Fourth ed
California:
Wadswoth Publishig Company,
1984.
FAKULTAS TEKNIK.
Gaya MLA
JOHNSTON, C. L.
Essential arithmetic.
Fourth ed
California:
Wadswoth Publishig Company,
1984.
FAKULTAS TEKNIK.
Gaya Turabian
JOHNSTON, C. L.
Essential arithmetic.
Fourth ed
California:
Wadswoth Publishig Company,
1984.
FAKULTAS TEKNIK.