APA Format
Verhelst, Norman . (). Methodological...: IRT models: parameter estimation, statistical testing and application in EER. ( Ket. Lihat halaman 183-218 ) ( Bab. 9 ) . : New York: Routledge, 2010
MLA Format
Verhelst, Norman . Methodological...: IRT models: parameter estimation, statistical testing and application in EER. ( Ket. Lihat halaman 183-218 ) ( Bab. 9 ) . : New York: Routledge, 2010,
Australian/Harvard Format
Verhelst, Norman . . Methodological...: IRT models: parameter estimation, statistical testing and application in EER. ( Ket. Lihat halaman 183-218 ) ( Bab. 9 ) . New York: Routledge, 2010, 
Warning: These citations may not always be 100% accurate.