Gaya APA
Guidlines for teaching mathematics. (1972).
Belmont CA:
Wadsworth Pu.Co.
Gaya Chicago
Guidlines for teaching mathematics.
.
Belmont CA:
Wadsworth Pu.Co,
1972.
Buku.
Gaya MLA
Guidlines for teaching mathematics.
.
Belmont CA:
Wadsworth Pu.Co,
1972.
Buku.
Gaya Turabian
Guidlines for teaching mathematics.
Belmont CA:
Wadsworth Pu.Co,
1972.
Buku.