Cita APA (7a ed.)

Ysseldyke, J. E., & Christenson, S. (1996). The instructional environment system-II: A system to identify a student's intructional needs. Sopris West.

Cita Chicago Style (17a ed.)

Ysseldyke, James E., y Sandra Christenson. The Instructional Environment System-II: A System to Identify a Student's Intructional Needs. Longmont: Sopris West, 1996.

Cita MLA (9a ed.)

Ysseldyke, James E., y Sandra Christenson. The Instructional Environment System-II: A System to Identify a Student's Intructional Needs. Sopris West, 1996.