APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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