एपीए उद्धरण

Keller, L. A., & Keller, R. R. The long-term sustainability of different item response theory scaling methods.

शिकागो स्टाइल उद्धरण

Keller, Lisa A., और Robert R. Keller. The Long-term Sustainability of Different Item Response Theory Scaling Methods.

एमएलए उद्धरण

Keller, Lisa A., और Robert R. Keller. The Long-term Sustainability of Different Item Response Theory Scaling Methods.