Gaya APA
Rogers, R, K, H, H, S, H, J. (1991).
Fundamentals of item response theory (1).
United States of America:
Sage Publications, inc..
Gaya MLA
Rogers, Ronald, K., Hambleton, H., Swaminathan, H., Jane.
"Fundamentals of item response theory".
1
United States of America:
Sage Publications, inc.,
1991.
Text.