Sloane, A. E. (1970). Manual of refraction. Little, Brown.
Cita Chicago (17th ed.)Sloane, Albert E. Manual of Refraction. Boston: Little, Brown, 1970.
Cita MLA (9th ed.)Sloane, Albert E. Manual of Refraction. Little, Brown, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.