APA Style
Mengenal Newton for beginners. (1999).
s.l.:
s.n..
Chicago Style
Mengenal Newton for beginners.
.
s.l.:
s.n.,
1999.
Text.
MLA Style
Mengenal Newton for beginners.
.
s.l.:
s.n.,
1999.
Text.
Turabian Style
Mengenal Newton for beginners.
s.l.:
s.n.,
1999.
Print.