Guthrie, J. T., & Wigfield, A. (1997). Reading engagement: Motivating readers through integrated instruction. International Reading Association.

Guthrie, John T., and Allan Wigfield. Reading Engagement: Motivating Readers Through Integrated Instruction. Newark, Del.: International Reading Association, 1997.

Guthrie, John T., and Allan Wigfield. Reading Engagement: Motivating Readers Through Integrated Instruction. International Reading Association, 1997.