APA-referens (7:e uppl.)

Bullough, R. V. (1974). Creating instructional materials. C. E. Merrill Pub. Co.

Chicago-referens (17:e uppl.)

Bullough, Robert V. Creating Instructional Materials. Columbus, Ohio: C. E. Merrill Pub. Co, 1974.

MLA-referens (8:e uppl.)

Bullough, Robert V. Creating Instructional Materials. C. E. Merrill Pub. Co, 1974.