APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (8:e uppl.)

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