APA Style
HOWDEN, HILDE. (1973).
INSTRUCTIONAL AIDS IN MATHEMATICS .
WASHINGTON:
.
Chicago Style
HOWDEN, HILDE.
INSTRUCTIONAL AIDS IN MATHEMATICS.
WASHINGTON:
,
1973.
Text.
MLA Style
HOWDEN, HILDE.
INSTRUCTIONAL AIDS IN MATHEMATICS.
WASHINGTON:
,
1973.
Text.
Turabian Style
HOWDEN, HILDE.
INSTRUCTIONAL AIDS IN MATHEMATICS.
WASHINGTON:
,
1973.
Print.