Παραπομπή APA

Helmholtz, H., & Southall, J. P. C. (1962). Helmholtz's treatise on physiological optics. New York: Dover Publications.

Παραπομπή Chicago Style

Helmholtz, H., and James P. C. Southall. Helmholtz's Treatise On Physiological Optics. New York: Dover Publications, 1962.

Παραπομπή MLA

Helmholtz, H., and James P. C. Southall. Helmholtz's Treatise On Physiological Optics. New York: Dover Publications, 1962.

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