APA (7th ed.) Citation

Spencer, J. R. (1972). Pupil-retina interaction: An analog eye response model. [publisher not identified].

Chicago Style (17th ed.) Citation

Spencer, John Rolland. Pupil-retina Interaction: An Analog Eye Response Model. [College Station, Tex.]: [publisher not identified], 1972.

MLA (9th ed.) Citation

Spencer, John Rolland. Pupil-retina Interaction: An Analog Eye Response Model. [publisher not identified], 1972.