Gaya APA
Ltd., O, S, C.
(1990).
Science & education Edisi 4
(
Ed. 4)
.
Tokyo:
Oikawa BLDG.
Gaya MLA
Ltd., Ogawa, Seiki, Co..
"Science & education Edisi 4".
Ed. 4
Tokyo:
Oikawa BLDG,
1990.
FAKULTAS TEKNIK.