Gaya APA
GISLER, R, J, M, E, P.
(2011).
MATH CHALLENGE
(
1st end)
.
Jakarta Selatan:
PT BHUANA ILMU POPULER.
Gaya MLA
GISLER, RILEY, JAMES, MARGE, EBERST, PEGGY.
"MATH CHALLENGE".
1st end
Jakarta Selatan:
PT BHUANA ILMU POPULER,
2011.
Text.