Gaya APA
Coombs, P, H., Hallak, J. (1972).
Educational Cost Analysis in Action; Case Studies For Planner .
Paris:
Unesco: IIEP.
Gaya MLA
Coombs, Philip, H.., Hallak, Jacques.
"Educational Cost Analysis in Action; Case Studies For Planner".
Paris:
Unesco: IIEP,
1972.
Text.