Cita APA (7a ed.)

Londesborough, A. J., Beards, H., & Beggs-Humphreys, M. E. (1965). The widening world (4. ed.). Philip.

Cita Chicago Style (17a ed.)

Londesborough, A. Jean, Harold Beards, y M. E. Beggs-Humphreys. The Widening World. 4. ed. London: Philip, 1965.

Cita MLA (9a ed.)

Londesborough, A. Jean, et al. The Widening World. 4. ed. Philip, 1965.