Gaya APA
Lincoln, Y, S., Guba, E, G.
(1981).
Effective Evaluation
.
San Fransisco:
Jossey-Bass Publishers.
Gaya MLA
Lincoln, Yvonna, S.., Guba, Egon, G.
"Effective Evaluation".
San Fransisco:
Jossey-Bass Publishers,
1981.
Art Original.