Cita APA (7a ed.)

Hornby, J., & Townsend, P. (1961). The secret of the valley (1. ed., repr.). Macmillan.

Cita Chicago Style (17a ed.)

Hornby, John, y Philip Townsend. The Secret of the Valley. 1. ed., repr. London: Macmillan, 1961.

Cita MLA (9a ed.)

Hornby, John, y Philip Townsend. The Secret of the Valley. 1. ed., repr. Macmillan, 1961.