Gaya APA

Johnson, R, L. (2009). Assessing PerformAnce : Designing, scoring, and Validating Performance Tasks (First published). New York and London: The Guilford Press.

Gaya MLA

Johnson, Robert, L.. "Assessing PerformAnce : Designing, scoring, and Validating Performance Tasks". First published New York and London: The Guilford Press, 2009. MM.