Gaya APA
Keys to Mathematics. (1973).
Philadelphia:
W.B. Saunders Company.
Gaya Chicago
Keys to Mathematics.
cet.9.
Philadelphia:
W.B. Saunders Company,
1973.
.
Gaya MLA
Keys to Mathematics.
cet.9.
Philadelphia:
W.B. Saunders Company,
1973.
.
Gaya Turabian
Keys to Mathematics.
Philadelphia:
W.B. Saunders Company,
1973.
.