Cita APA (7th ed.)

Butts, D. P., & Hord, S. (1971). Planning instruction: A self directed learning program. The Research and Development Center for Teacher Education. University of Texas at Austin.

Cita Chicago (17th ed.)

Butts, David P., i S. Hord. Planning Instruction: A Self Directed Learning Program. Austin, Texas: The Research and Development Center for Teacher Education. University of Texas at Austin, 1971.

Cita MLA (9th ed.)

Butts, David P., i S. Hord. Planning Instruction: A Self Directed Learning Program. The Research and Development Center for Teacher Education. University of Texas at Austin, 1971.