Parson, S. J., & Elder , S. S. D. (1970). Parsons' diseases of the eye (15th ed.). E.L.B.S; Churchill.
Cita Chicago (17th ed.)Parson, Sir J., i Sir Stewart Duke Elder. Parsons' Diseases of the Eye. 15th ed. London: E.L.B.S; Churchill, 1970.
Cita MLA (9th ed.)Parson, Sir J., i Sir Stewart Duke Elder. Parsons' Diseases of the Eye. 15th ed. E.L.B.S; Churchill, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.