Gaya APA
SPITZER, Herbert F.. (1948).
The Teaching of arithmetic .
Boston:
Houghton Mifflin Company.
Gaya Chicago
SPITZER, Herbert F..
The Teaching of arithmetic.
Boston:
Houghton Mifflin Company,
1948.
.
Gaya MLA
SPITZER, Herbert F..
The Teaching of arithmetic.
Boston:
Houghton Mifflin Company,
1948.
.
Gaya Turabian
SPITZER, Herbert F..
The Teaching of arithmetic.
Boston:
Houghton Mifflin Company,
1948.
.