Gaya APA
Guidelines For Project Evaluation. (1972).
New York:
united nations.
Gaya Chicago
Guidelines For Project Evaluation.
ed 1.
New York:
united nations,
1972.
Text.
Gaya MLA
Guidelines For Project Evaluation.
ed 1.
New York:
united nations,
1972.
Text.
Gaya Turabian
Guidelines For Project Evaluation.
New York:
united nations,
1972.
Print.