Citazione Stile APA (7a Edizione)

Otto, W., & Koenke, K. (1969). Remedial teaching: Research and comment. Houghton Mifflin.

Citazione stile Chigago Style (17a edizione)

Otto, Wayne, e Karl Koenke. Remedial Teaching: Research and Comment. Boston: Houghton Mifflin, 1969.

Citatione MLA (8a ed.)

Otto, Wayne, e Karl Koenke. Remedial Teaching: Research and Comment. Houghton Mifflin, 1969.