Gaya APA
HAVELOCK, R.G. (1977).
Solving educational problems .
Paris:
Unesco.
Gaya Chicago
HAVELOCK, R.G.
Solving educational problems.
Paris:
Unesco,
1977.
Text.
Gaya MLA
HAVELOCK, R.G.
Solving educational problems.
Paris:
Unesco,
1977.
Text.
Gaya Turabian
HAVELOCK, R.G.
Solving educational problems.
Paris:
Unesco,
1977.
Print.