APA-viite (7. p.)

Gropper, G. L. (1991). Text displays: Analysis and systematic design. Educational Technology Publications.

Chicago-viite (17. p.)

Gropper, George Leonard. Text Displays: Analysis and Systematic Design. Englewood Cliffs, N.J.: Educational Technology Publications, 1991.

MLA-viite (8. p.)

Gropper, George Leonard. Text Displays: Analysis and Systematic Design. Educational Technology Publications, 1991.