Stone, L. (1974). Reading english objectively: Stage I. Macmillan.
Cita Chicago (17th ed.)Stone, Linton. Reading English Objectively: Stage I. London: Macmillan, 1974.
Cita MLA (9th ed.)Stone, Linton. Reading English Objectively: Stage I. Macmillan, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.