Cita APA (7th ed.)

Seels, B., & Glasgow, Z. (1990). Exercises in instructional design / Barbara Seels, Zita Glasgow. Merrill.

Cita Chicago (17th ed.)

Seels, Barbara, i Zita Glasgow. Exercises in Instructional Design / Barbara Seels, Zita Glasgow. Columbus: Merrill, 1990.

Cita MLA (9th ed.)

Seels, Barbara, i Zita Glasgow. Exercises in Instructional Design / Barbara Seels, Zita Glasgow. Merrill, 1990.