APA Style
Essentials: Solving problem = pemecahan masalah. (2001).
s.l.:
s.n..
Chicago Style
Essentials: Solving problem = pemecahan masalah.
.
s.l.:
s.n.,
2001.
Text.
MLA Style
Essentials: Solving problem = pemecahan masalah.
.
s.l.:
s.n.,
2001.
Text.
Turabian Style
Essentials: Solving problem = pemecahan masalah.
s.l.:
s.n.,
2001.
Print.