Cita APA (7a ed.)

Lay, E. J. S., & Lay, G. (1961). Living in modern times (Easy study ed.). Macmillan.

Cita Chicago Style (17a ed.)

Lay, E. J. S., y George Lay. Living in Modern Times. Easy study ed. London: Macmillan, 1961.

Cita MLA (9a ed.)

Lay, E. J. S., y George Lay. Living in Modern Times. Easy study ed. Macmillan, 1961.